/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/avg10-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:07:24,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:07:25,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:07:25,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:07:25,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:07:25,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:07:25,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:07:25,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:07:25,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:07:25,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:07:25,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:07:25,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:07:25,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:07:25,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:07:25,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:07:25,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:07:25,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:07:25,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:07:25,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:07:25,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:07:25,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:07:25,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:07:25,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:07:25,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:07:25,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:07:25,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:07:25,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:07:25,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:07:25,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:07:25,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:07:25,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:07:25,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:07:25,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:07:25,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:07:25,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:07:25,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:07:25,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:07:25,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:07:25,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:07:25,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:07:25,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:07:25,084 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 13:07:25,133 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:07:25,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:07:25,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:07:25,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:07:25,135 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:07:25,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:07:25,135 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:07:25,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:07:25,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:07:25,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:07:25,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:07:25,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:07:25,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:07:25,137 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:07:25,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:07:25,137 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:07:25,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:07:25,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:07:25,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:07:25,138 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:07:25,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:07:25,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:07:25,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:07:25,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:07:25,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:07:25,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:07:25,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:07:25,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:07:25,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:07:25,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:07:25,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:07:25,474 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:07:25,478 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:07:25,480 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:07:25,480 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:07:25,481 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg10-2.i [2020-10-13 13:07:25,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4edf067da/f402290d74b246e6a44057d8366abea4/FLAG29f1c3e3d [2020-10-13 13:07:25,998 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:07:25,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/avg10-2.i [2020-10-13 13:07:26,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4edf067da/f402290d74b246e6a44057d8366abea4/FLAG29f1c3e3d [2020-10-13 13:07:26,385 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4edf067da/f402290d74b246e6a44057d8366abea4 [2020-10-13 13:07:26,397 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:07:26,399 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:07:26,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:07:26,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:07:26,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:07:26,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:07:26" (1/1) ... [2020-10-13 13:07:26,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79b4c5c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:26, skipping insertion in model container [2020-10-13 13:07:26,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:07:26" (1/1) ... [2020-10-13 13:07:26,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:07:26,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:07:26,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:07:26,643 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:07:26,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:07:26,679 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:07:26,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:26 WrapperNode [2020-10-13 13:07:26,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:07:26,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:07:26,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:07:26,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:07:26,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:26" (1/1) ... [2020-10-13 13:07:26,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:26" (1/1) ... [2020-10-13 13:07:26,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:26" (1/1) ... [2020-10-13 13:07:26,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:26" (1/1) ... [2020-10-13 13:07:26,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:26" (1/1) ... [2020-10-13 13:07:26,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:26" (1/1) ... [2020-10-13 13:07:26,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:26" (1/1) ... [2020-10-13 13:07:26,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:07:26,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:07:26,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:07:26,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:07:26,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:07:26,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:07:26,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:07:26,868 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2020-10-13 13:07:26,868 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:07:26,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:07:26,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 13:07:26,869 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2020-10-13 13:07:26,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 13:07:26,869 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:07:26,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 13:07:26,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 13:07:26,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 13:07:26,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:07:26,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:07:27,161 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:07:27,164 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 13:07:27,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:07:27 BoogieIcfgContainer [2020-10-13 13:07:27,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:07:27,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:07:27,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:07:27,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:07:27,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:07:26" (1/3) ... [2020-10-13 13:07:27,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a5a40ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:07:27, skipping insertion in model container [2020-10-13 13:07:27,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:26" (2/3) ... [2020-10-13 13:07:27,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a5a40ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:07:27, skipping insertion in model container [2020-10-13 13:07:27,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:07:27" (3/3) ... [2020-10-13 13:07:27,192 INFO L109 eAbstractionObserver]: Analyzing ICFG avg10-2.i [2020-10-13 13:07:27,204 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:07:27,211 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:07:27,244 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:07:27,270 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:07:27,270 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:07:27,270 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:07:27,270 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:07:27,271 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:07:27,271 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:07:27,271 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:07:27,271 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:07:27,290 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-13 13:07:27,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 13:07:27,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:27,297 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:27,298 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:27,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:27,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2020-10-13 13:07:27,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:27,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578158651] [2020-10-13 13:07:27,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:27,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:27,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:27,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:27,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:28,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:28,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:29,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:29,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 13:07:29,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:07:29,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1638 [2020-10-13 13:07:29,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:29,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:29,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 13:07:29,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:29,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 13:07:29,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:29,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:29,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:29,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:07:29,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:29,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:07:29,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:29,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:29,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:07:29,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:07:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:29,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:29,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:29,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:29,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:07:29,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:29,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:07:29,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:29,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:29,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:07:29,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:29,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:29,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 13:07:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:29,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:29,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:29,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:29,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:07:29,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:29,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:07:29,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:29,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:29,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:07:29,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:29,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:29,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:07:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:29,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:29,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:29,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:29,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:07:29,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:29,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 13:07:29,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:29,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:29,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:07:29,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:29,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:29,307 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 13:07:29,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578158651] [2020-10-13 13:07:29,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:07:29,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 13:07:29,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310668425] [2020-10-13 13:07:29,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 13:07:29,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:29,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 13:07:29,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 13:07:29,342 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-13 13:07:29,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:29,482 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-10-13 13:07:29,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 13:07:29,485 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-13 13:07:29,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:29,504 INFO L225 Difference]: With dead ends: 54 [2020-10-13 13:07:29,505 INFO L226 Difference]: Without dead ends: 26 [2020-10-13 13:07:29,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 13:07:29,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-13 13:07:29,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-13 13:07:29,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-13 13:07:29,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-13 13:07:29,589 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2020-10-13 13:07:29,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:29,589 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-13 13:07:29,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 13:07:29,591 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-13 13:07:29,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 13:07:29,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:29,609 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:29,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:07:29,610 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:29,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:29,611 INFO L82 PathProgramCache]: Analyzing trace with hash 721846027, now seen corresponding path program 1 times [2020-10-13 13:07:29,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:29,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402245583] [2020-10-13 13:07:29,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:29,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:29,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:29,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:29,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:29,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:30,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:31,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:31,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 13:07:31,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:07:31,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1676 [2020-10-13 13:07:31,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:31,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:07:31,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 13:07:31,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:07:31,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:31,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:31,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:31,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:31,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:07:31,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:31,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:07:31,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:31,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:31,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:31,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:31,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:31,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:07:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:31,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:31,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:31,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:31,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:07:31,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:31,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:07:31,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:31,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:31,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:31,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:31,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:31,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 13:07:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:31,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:31,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:31,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:31,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:07:31,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:31,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:07:31,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:31,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:31,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:31,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:31,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:31,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:07:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:31,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:31,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:31,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:07:31,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:31,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:07:31,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:31,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:07:31,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:07:31,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:07:31,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:31,443 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 13:07:31,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402245583] [2020-10-13 13:07:31,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:07:31,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:07:31,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183907389] [2020-10-13 13:07:31,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:07:31,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:31,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:07:31,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:07:31,450 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-13 13:07:31,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:31,542 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-10-13 13:07:31,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:07:31,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-13 13:07:31,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:31,544 INFO L225 Difference]: With dead ends: 45 [2020-10-13 13:07:31,544 INFO L226 Difference]: Without dead ends: 28 [2020-10-13 13:07:31,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:07:31,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-13 13:07:31,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-13 13:07:31,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 13:07:31,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-13 13:07:31,554 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-13 13:07:31,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:31,554 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-13 13:07:31,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:07:31,554 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-13 13:07:31,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 13:07:31,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:31,556 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:31,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:07:31,557 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:31,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:31,557 INFO L82 PathProgramCache]: Analyzing trace with hash 540504713, now seen corresponding path program 1 times [2020-10-13 13:07:31,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:31,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539677585] [2020-10-13 13:07:31,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:31,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:31,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:31,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:31,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:31,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:35,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:35,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 13:07:35,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:07:35,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3556 [2020-10-13 13:07:35,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:35,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:07:35,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 13:07:35,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:07:35,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:35,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:35,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:35,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:35,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:07:35,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:35,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:07:35,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:35,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:35,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:35,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:35,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:35,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:07:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:35,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:35,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:35,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:35,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:07:35,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:35,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 13:07:35,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:35,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:35,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:35,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:35,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:35,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 13:07:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:35,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:35,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:35,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:35,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:07:35,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:35,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 13:07:35,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:35,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:35,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:35,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:35,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 13:07:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:35,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:35,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:35,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:35,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:07:35,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:35,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 13:07:35,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:35,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:35,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:07:35,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:35,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:35,286 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-13 13:07:35,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539677585] [2020-10-13 13:07:35,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:07:35,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:07:35,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051332852] [2020-10-13 13:07:35,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:07:35,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:35,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:07:35,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:07:35,305 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-13 13:07:35,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:35,430 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-13 13:07:35,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:07:35,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-13 13:07:35,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:35,432 INFO L225 Difference]: With dead ends: 42 [2020-10-13 13:07:35,432 INFO L226 Difference]: Without dead ends: 29 [2020-10-13 13:07:35,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:07:35,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-13 13:07:35,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-13 13:07:35,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 13:07:35,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-13 13:07:35,447 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 38 [2020-10-13 13:07:35,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:35,450 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-13 13:07:35,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:07:35,450 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-13 13:07:35,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 13:07:35,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:35,455 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:35,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:07:35,456 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:35,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:35,457 INFO L82 PathProgramCache]: Analyzing trace with hash -107343225, now seen corresponding path program 1 times [2020-10-13 13:07:35,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:35,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310955144] [2020-10-13 13:07:35,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:35,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:35,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:35,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:35,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:35,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:40,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:40,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 13:07:40,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:07:40,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:07:40,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:40,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:07:40,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:07:40,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:07:40,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:40,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:40,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:40,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:40,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:07:40,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:40,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:07:40,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:40,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:40,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:40,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:40,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 13:07:40,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:07:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:40,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:40,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:40,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:40,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:07:40,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:40,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 13:07:40,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:40,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:40,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:07:40,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:40,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:40,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 13:07:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:40,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:40,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:40,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:40,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:07:40,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:40,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 13:07:40,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:40,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:40,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:07:40,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:40,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:40,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 13:07:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:40,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:40,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:40,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:40,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:07:40,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:40,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 13:07:40,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:40,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:40,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:07:40,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:40,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:40,675 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 13:07:40,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310955144] [2020-10-13 13:07:40,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:07:40,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:07:40,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465509427] [2020-10-13 13:07:40,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:07:40,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:40,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:07:40,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:07:40,680 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-13 13:07:40,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:40,810 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-13 13:07:40,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:07:40,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-13 13:07:40,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:40,812 INFO L225 Difference]: With dead ends: 50 [2020-10-13 13:07:40,812 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 13:07:40,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:07:40,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 13:07:40,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-13 13:07:40,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 13:07:40,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-13 13:07:40,829 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 40 [2020-10-13 13:07:40,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:40,829 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-13 13:07:40,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:07:40,830 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-13 13:07:40,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 13:07:40,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:40,832 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:40,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:07:40,832 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:40,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:40,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1550668567, now seen corresponding path program 1 times [2020-10-13 13:07:40,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:40,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286018006] [2020-10-13 13:07:40,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:40,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:40,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:40,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:40,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:41,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:45,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:45,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 13:07:45,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:07:45,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:07:45,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:45,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:07:45,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:07:45,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:07:45,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:45,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:45,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:45,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:45,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:07:45,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:45,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:07:45,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:45,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:45,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:45,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:45,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:45,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 13:07:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:45,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:45,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:45,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:45,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:07:45,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:45,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:07:45,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:07:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:45,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:45,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 13:07:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:45,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:45,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:45,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:45,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:07:45,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:45,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:07:45,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:45,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:45,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:07:45,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:45,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:07:45,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 13:07:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:45,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:45,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:45,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:45,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:07:45,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:45,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:07:45,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:45,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:45,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:07:46,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:46,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:46,007 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 13:07:46,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286018006] [2020-10-13 13:07:46,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:07:46,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 13:07:46,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716167330] [2020-10-13 13:07:46,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:07:46,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:46,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:07:46,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:07:46,009 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-13 13:07:46,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:46,121 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-10-13 13:07:46,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:07:46,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-13 13:07:46,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:46,122 INFO L225 Difference]: With dead ends: 52 [2020-10-13 13:07:46,123 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 13:07:46,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:07:46,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 13:07:46,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-13 13:07:46,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 13:07:46,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-13 13:07:46,137 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 42 [2020-10-13 13:07:46,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:46,138 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-13 13:07:46,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:07:46,138 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-13 13:07:46,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 13:07:46,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:46,142 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:46,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:07:46,142 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:46,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:46,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1311885621, now seen corresponding path program 2 times [2020-10-13 13:07:46,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:46,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015513132] [2020-10-13 13:07:46,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:46,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:46,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:46,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:46,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:46,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:51,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:51,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 13:07:51,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:07:51,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:07:51,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:51,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:07:51,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-13 13:07:51,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:07:51,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:51,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:51,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:51,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:51,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:07:51,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:51,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:07:51,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:51,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:51,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:51,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 13:07:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:51,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:51,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:51,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:51,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:07:51,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:51,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:07:51,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:51,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:51,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:51,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:51,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:51,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 13:07:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:51,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:51,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:51,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:51,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:07:51,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:51,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:07:51,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:51,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:51,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:51,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:51,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 13:07:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:51,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:51,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:51,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:51,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:07:51,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:51,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:07:51,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:51,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:51,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:07:51,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:51,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:51,273 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-13 13:07:51,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015513132] [2020-10-13 13:07:51,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:07:51,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 13:07:51,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400210658] [2020-10-13 13:07:51,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:07:51,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:51,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:07:51,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:07:51,278 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-10-13 13:07:51,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:51,359 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2020-10-13 13:07:51,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:07:51,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-10-13 13:07:51,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:51,360 INFO L225 Difference]: With dead ends: 47 [2020-10-13 13:07:51,361 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 13:07:51,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:07:51,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 13:07:51,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 13:07:51,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 13:07:51,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-13 13:07:51,368 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 44 [2020-10-13 13:07:51,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:51,368 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-13 13:07:51,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:07:51,368 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-13 13:07:51,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 13:07:51,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:51,370 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:51,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:07:51,370 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:51,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:51,371 INFO L82 PathProgramCache]: Analyzing trace with hash -2137993655, now seen corresponding path program 3 times [2020-10-13 13:07:51,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:51,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281368269] [2020-10-13 13:07:51,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:51,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:51,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:51,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:51,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:51,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:56,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:56,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 13:07:56,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:07:56,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:07:56,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:56,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:07:56,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:07:56,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:07:56,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:56,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:56,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:56,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:56,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:07:56,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:56,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:07:56,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:56,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:56,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:56,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:56,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:56,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 13:07:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:56,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:56,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:56,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:56,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:07:56,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:56,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 13:07:56,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:56,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:56,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:56,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:56,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:56,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 13:07:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:56,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:56,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:56,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:07:56,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:56,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:07:56,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:56,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:07:56,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:07:56,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:07:56,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:56,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 13:07:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:56,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:56,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:56,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:56,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:07:56,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:56,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:07:56,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:56,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:56,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:07:56,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:56,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:56,516 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 13:07:56,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281368269] [2020-10-13 13:07:56,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:07:56,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 13:07:56,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527723034] [2020-10-13 13:07:56,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:07:56,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:56,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:07:56,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:07:56,520 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-13 13:07:56,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:56,615 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2020-10-13 13:07:56,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:07:56,616 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-10-13 13:07:56,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:56,616 INFO L225 Difference]: With dead ends: 57 [2020-10-13 13:07:56,617 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 13:07:56,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:07:56,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 13:07:56,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-13 13:07:56,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 13:07:56,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-13 13:07:56,623 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 46 [2020-10-13 13:07:56,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:56,624 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-13 13:07:56,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:07:56,624 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-13 13:07:56,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 13:07:56,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:56,625 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:56,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:07:56,626 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:56,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:56,626 INFO L82 PathProgramCache]: Analyzing trace with hash -629434041, now seen corresponding path program 4 times [2020-10-13 13:07:56,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:56,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356940748] [2020-10-13 13:07:56,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:56,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:56,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:56,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:56,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:57,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:01,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:01,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 13:08:01,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:08:01,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:08:01,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:01,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:08:01,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:01,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:08:01,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:01,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:01,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:01,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:01,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:01,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:01,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:01,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:01,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:01,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:01,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:01,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:01,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 13:08:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:01,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:01,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:01,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:01,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:01,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:01,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:08:01,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:01,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:01,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:01,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:01,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:01,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 13:08:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:01,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:01,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:01,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:01,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:01,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:01,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:08:01,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:01,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:01,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:01,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:01,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:01,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 13:08:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:01,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:01,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:01,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:01,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:01,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:01,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:08:01,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:01,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:01,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:01,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:01,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:01,756 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 13:08:01,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356940748] [2020-10-13 13:08:01,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:01,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 13:08:01,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428835838] [2020-10-13 13:08:01,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:08:01,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:01,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:08:01,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:08:01,758 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-13 13:08:01,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:01,907 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-10-13 13:08:01,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:08:01,908 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-13 13:08:01,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:01,909 INFO L225 Difference]: With dead ends: 62 [2020-10-13 13:08:01,909 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 13:08:01,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:08:01,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 13:08:01,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-13 13:08:01,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-13 13:08:01,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-13 13:08:01,920 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 52 [2020-10-13 13:08:01,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:01,920 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-13 13:08:01,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:08:01,920 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-13 13:08:01,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 13:08:01,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:01,924 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:01,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:08:01,924 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:01,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:01,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1887809705, now seen corresponding path program 5 times [2020-10-13 13:08:01,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:01,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565115232] [2020-10-13 13:08:01,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:01,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:01,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:01,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:01,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:02,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:06,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:06,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 13:08:06,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:08:06,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:08:06,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:06,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:08:06,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 13:08:06,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:08:06,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:06,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:06,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:06,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:06,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:06,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:06,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:06,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:06,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:06,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:06,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:06,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:06,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 13:08:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:06,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:06,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:06,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:06,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:06,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:08:06,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:06,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:08:06,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:08:06,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:08:06,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:07,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 13:08:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:07,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:07,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:07,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:07,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:07,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:07,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:08:07,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:07,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:07,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:07,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:07,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:07,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 13:08:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:07,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:07,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:07,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:07,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:07,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:07,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:08:07,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:07,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:07,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:07,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:07,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 13:08:07,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565115232] [2020-10-13 13:08:07,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:07,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 13:08:07,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386331832] [2020-10-13 13:08:07,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:08:07,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:07,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:08:07,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:08:07,081 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-10-13 13:08:07,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:07,196 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2020-10-13 13:08:07,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:08:07,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-13 13:08:07,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:07,197 INFO L225 Difference]: With dead ends: 63 [2020-10-13 13:08:07,198 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 13:08:07,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:08:07,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 13:08:07,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-13 13:08:07,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 13:08:07,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-13 13:08:07,211 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 54 [2020-10-13 13:08:07,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:07,211 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-13 13:08:07,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:08:07,212 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-13 13:08:07,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 13:08:07,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:07,213 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:07,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:08:07,213 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:07,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:07,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1137374119, now seen corresponding path program 6 times [2020-10-13 13:08:07,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:07,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537865259] [2020-10-13 13:08:07,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:07,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:07,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:07,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:07,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:12,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:12,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 13:08:12,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:08:12,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 13:08:12,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:12,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:08:12,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 13:08:12,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:08:12,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:12,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:12,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:12,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:12,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:12,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:12,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:12,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:12,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:12,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:12,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:12,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:12,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 13:08:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:12,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:12,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:12,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:12,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:08:12,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:12,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 13:08:12,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:12,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:12,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:12,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:12,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:12,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 13:08:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:12,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:12,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:12,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:12,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:08:12,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:12,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:08:12,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:12,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:12,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:12,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:12,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:12,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 13:08:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:12,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:12,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:12,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:12,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:08:12,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:12,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:08:12,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:12,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:12,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:08:12,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:12,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:12,375 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-13 13:08:12,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537865259] [2020-10-13 13:08:12,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:12,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 13:08:12,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027424242] [2020-10-13 13:08:12,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:08:12,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:12,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:08:12,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:08:12,377 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 6 states. [2020-10-13 13:08:12,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:12,463 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-10-13 13:08:12,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:08:12,464 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-10-13 13:08:12,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:12,465 INFO L225 Difference]: With dead ends: 59 [2020-10-13 13:08:12,465 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 13:08:12,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:08:12,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 13:08:12,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-13 13:08:12,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 13:08:12,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-13 13:08:12,478 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-13 13:08:12,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:12,478 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-13 13:08:12,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:08:12,479 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-13 13:08:12,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 13:08:12,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:12,485 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:12,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:08:12,486 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:12,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:12,487 INFO L82 PathProgramCache]: Analyzing trace with hash -2089835483, now seen corresponding path program 7 times [2020-10-13 13:08:12,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:12,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003519629] [2020-10-13 13:08:12,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:12,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:12,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:12,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:12,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:17,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:17,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 13:08:17,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:08:17,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:08:17,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:17,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:08:17,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:17,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:08:17,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:17,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:17,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:17,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:17,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:17,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:17,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:17,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:17,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:17,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:17,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:17,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:17,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 13:08:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:17,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:17,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:17,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:17,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:08:17,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:17,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:08:17,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:17,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:17,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:08:17,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:17,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:17,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 13:08:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:17,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:17,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:17,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:17,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:08:17,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:17,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:08:17,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:17,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:17,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:08:17,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:17,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:17,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 13:08:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:17,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:17,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:17,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:17,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:08:17,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:17,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:08:17,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:17,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:17,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:08:17,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:17,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:17,633 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-13 13:08:17,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003519629] [2020-10-13 13:08:17,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:17,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 13:08:17,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078024670] [2020-10-13 13:08:17,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:08:17,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:17,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:08:17,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:08:17,636 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-13 13:08:17,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:17,725 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2020-10-13 13:08:17,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:08:17,725 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-10-13 13:08:17,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:17,726 INFO L225 Difference]: With dead ends: 72 [2020-10-13 13:08:17,726 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 13:08:17,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:08:17,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 13:08:17,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-13 13:08:17,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 13:08:17,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-13 13:08:17,732 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 62 [2020-10-13 13:08:17,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:17,733 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-13 13:08:17,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:08:17,733 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-13 13:08:17,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 13:08:17,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:17,734 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:17,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:08:17,734 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:17,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:17,734 INFO L82 PathProgramCache]: Analyzing trace with hash 546662663, now seen corresponding path program 8 times [2020-10-13 13:08:17,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:17,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332297743] [2020-10-13 13:08:17,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:17,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:17,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:17,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:17,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:22,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:22,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 13:08:22,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:08:22,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:08:22,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:22,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:08:22,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 13:08:22,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:08:22,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:22,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:22,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:22,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:22,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:22,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:22,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:22,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:22,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:22,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:22,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:22,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:22,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 13:08:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:22,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:22,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:22,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:08:22,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:22,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:08:22,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:22,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:08:22,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:08:22,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:08:22,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:22,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 13:08:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:22,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:22,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:22,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:22,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:08:22,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:22,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:08:22,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:22,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:22,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:08:22,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:22,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:22,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 13:08:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:22,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:22,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:22,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:22,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:08:22,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:22,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:08:22,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:22,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:22,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:08:22,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:22,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:22,886 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-13 13:08:22,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332297743] [2020-10-13 13:08:22,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:22,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 13:08:22,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130654904] [2020-10-13 13:08:22,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:08:22,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:22,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:08:22,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:08:22,887 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 7 states. [2020-10-13 13:08:23,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:23,018 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2020-10-13 13:08:23,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:08:23,018 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-13 13:08:23,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:23,019 INFO L225 Difference]: With dead ends: 73 [2020-10-13 13:08:23,019 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 13:08:23,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:08:23,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 13:08:23,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-13 13:08:23,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 13:08:23,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-13 13:08:23,025 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 64 [2020-10-13 13:08:23,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:23,025 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-13 13:08:23,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:08:23,025 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-13 13:08:23,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 13:08:23,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:23,026 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:23,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:08:23,026 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:23,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:23,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1862159493, now seen corresponding path program 9 times [2020-10-13 13:08:23,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:23,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741051750] [2020-10-13 13:08:23,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:23,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:23,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:23,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:23,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:28,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:28,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 13:08:28,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:08:28,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:08:28,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:28,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:08:28,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 13:08:28,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:08:28,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:28,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:28,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:28,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:28,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:28,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:28,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:28,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:28,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:28,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:28,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:28,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:28,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 13:08:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:28,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:28,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:28,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:28,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:28,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:28,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 13:08:28,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:28,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:28,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:28,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:28,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:28,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 13:08:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:28,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:28,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:28,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:28,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:28,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:28,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 13:08:28,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:28,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:28,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:28,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:28,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:28,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 13:08:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:28,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:28,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:28,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:28,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:28,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:28,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 13:08:28,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:28,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:28,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:28,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:28,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:28,202 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-13 13:08:28,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741051750] [2020-10-13 13:08:28,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:28,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 13:08:28,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144407656] [2020-10-13 13:08:28,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:08:28,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:28,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:08:28,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:08:28,204 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 7 states. [2020-10-13 13:08:28,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:28,305 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-10-13 13:08:28,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:08:28,306 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-10-13 13:08:28,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:28,307 INFO L225 Difference]: With dead ends: 67 [2020-10-13 13:08:28,308 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 13:08:28,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:08:28,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 13:08:28,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-13 13:08:28,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 13:08:28,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-13 13:08:28,315 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 70 [2020-10-13 13:08:28,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:28,316 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-13 13:08:28,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:08:28,316 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-13 13:08:28,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 13:08:28,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:28,317 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:28,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:08:28,317 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:28,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:28,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1920651901, now seen corresponding path program 10 times [2020-10-13 13:08:28,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:28,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50934212] [2020-10-13 13:08:28,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:28,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:28,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:28,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:28,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:33,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:33,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 13:08:33,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:08:33,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:08:33,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:33,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:08:33,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:33,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:08:33,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:33,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:33,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:33,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:33,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:33,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:33,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:08:33,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:33,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:33,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:33,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:33,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:33,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 13:08:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:33,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:33,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:33,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:33,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:33,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:33,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 13:08:33,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:33,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:33,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:33,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:33,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:33,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 13:08:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:33,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:33,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:33,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:33,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:33,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:33,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 13:08:33,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:33,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:33,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:33,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:33,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:33,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 13:08:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:33,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:33,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:33,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:33,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:33,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:33,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 13:08:33,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:33,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:33,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:33,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:33,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:33,500 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-13 13:08:33,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50934212] [2020-10-13 13:08:33,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:33,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 13:08:33,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367407635] [2020-10-13 13:08:33,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:08:33,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:33,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:08:33,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:08:33,503 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 8 states. [2020-10-13 13:08:33,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:33,596 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2020-10-13 13:08:33,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:08:33,597 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2020-10-13 13:08:33,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:33,597 INFO L225 Difference]: With dead ends: 82 [2020-10-13 13:08:33,597 INFO L226 Difference]: Without dead ends: 50 [2020-10-13 13:08:33,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:08:33,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-13 13:08:33,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-13 13:08:33,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-13 13:08:33,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-13 13:08:33,604 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 72 [2020-10-13 13:08:33,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:33,604 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-13 13:08:33,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:08:33,604 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-13 13:08:33,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-13 13:08:33,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:33,605 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:33,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:08:33,606 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:33,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:33,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1261158373, now seen corresponding path program 11 times [2020-10-13 13:08:33,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:33,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270998761] [2020-10-13 13:08:33,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:33,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:33,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:33,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:33,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:38,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:38,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 13:08:38,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:08:38,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:08:38,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:38,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:08:38,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 13:08:38,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:08:38,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:38,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:38,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:38,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:38,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:38,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:38,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:38,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:38,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:38,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:38,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:38,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:38,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 13:08:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:38,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:38,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:38,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:38,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:38,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:38,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 13:08:38,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:38,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:38,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:38,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:38,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:38,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:08:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:38,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:38,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:38,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:38,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:38,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:38,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:08:38,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:38,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:38,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:38,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:38,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:38,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 13:08:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:38,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:38,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:38,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:38,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:38,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:38,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:08:38,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:38,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:38,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:38,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:38,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:38,766 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2020-10-13 13:08:38,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270998761] [2020-10-13 13:08:38,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:38,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 13:08:38,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107436695] [2020-10-13 13:08:38,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:08:38,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:38,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:08:38,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:08:38,768 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 8 states. [2020-10-13 13:08:38,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:38,840 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2020-10-13 13:08:38,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:08:38,841 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-10-13 13:08:38,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:38,842 INFO L225 Difference]: With dead ends: 71 [2020-10-13 13:08:38,842 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 13:08:38,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:08:38,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 13:08:38,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-13 13:08:38,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 13:08:38,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-13 13:08:38,848 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 74 [2020-10-13 13:08:38,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:38,849 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-13 13:08:38,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:08:38,849 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-13 13:08:38,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 13:08:38,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:38,850 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:38,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 13:08:38,850 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:38,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:38,851 INFO L82 PathProgramCache]: Analyzing trace with hash 337856739, now seen corresponding path program 12 times [2020-10-13 13:08:38,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:38,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979971251] [2020-10-13 13:08:38,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:38,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:38,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:38,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:38,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:43,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:43,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 13:08:43,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:08:43,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:08:43,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:43,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:08:43,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 13:08:43,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:08:43,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:43,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:43,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:43,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:43,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:43,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:43,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:43,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:43,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:43,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:43,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:43,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:43,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 13:08:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:43,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:43,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:43,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:43,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:43,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 13:08:43,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:43,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:08:43,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:08:43,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:08:43,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:43,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:08:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:43,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:43,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:43,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:43,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:43,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:43,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 13:08:44,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:44,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:44,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:44,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:44,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:44,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 13:08:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:44,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:44,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:44,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:44,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:44,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:44,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 13:08:44,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:44,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:44,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:44,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:44,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:44,090 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-13 13:08:44,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979971251] [2020-10-13 13:08:44,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:44,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 13:08:44,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727600226] [2020-10-13 13:08:44,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:08:44,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:44,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:08:44,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:08:44,098 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 8 states. [2020-10-13 13:08:44,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:44,306 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2020-10-13 13:08:44,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:08:44,307 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2020-10-13 13:08:44,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:44,308 INFO L225 Difference]: With dead ends: 87 [2020-10-13 13:08:44,308 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 13:08:44,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:08:44,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 13:08:44,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-13 13:08:44,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 13:08:44,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-13 13:08:44,329 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 76 [2020-10-13 13:08:44,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:44,329 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-13 13:08:44,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:08:44,330 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-13 13:08:44,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 13:08:44,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:44,333 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:44,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 13:08:44,333 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:44,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:44,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1187343007, now seen corresponding path program 13 times [2020-10-13 13:08:44,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:44,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500875109] [2020-10-13 13:08:44,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:44,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:44,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:44,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:44,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:44,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:49,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:49,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 13:08:49,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:08:49,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:08:49,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:49,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:08:49,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-13 13:08:49,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:08:49,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:49,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:49,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:49,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:49,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:49,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:49,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:49,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:49,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:49,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:49,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:49,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:49,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 13:08:49,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:49,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:49,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:49,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:49,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 13:08:49,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:49,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 13:08:49,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:49,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:49,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:49,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:49,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:49,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 13:08:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:49,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:49,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:49,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:49,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 13:08:49,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:49,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 13:08:49,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:49,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:49,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:49,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:49,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:49,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:08:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:49,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:49,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:49,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:49,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 13:08:49,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:49,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 13:08:49,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:49,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:49,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:08:49,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:49,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:49,648 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-13 13:08:49,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500875109] [2020-10-13 13:08:49,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:49,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 13:08:49,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024349078] [2020-10-13 13:08:49,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:08:49,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:49,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:08:49,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:08:49,652 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 9 states. [2020-10-13 13:08:49,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:49,787 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-10-13 13:08:49,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 13:08:49,787 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-13 13:08:49,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:49,789 INFO L225 Difference]: With dead ends: 77 [2020-10-13 13:08:49,789 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 13:08:49,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:08:49,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 13:08:49,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-13 13:08:49,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 13:08:49,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-13 13:08:49,808 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 82 [2020-10-13 13:08:49,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:49,809 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-13 13:08:49,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:08:49,809 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-13 13:08:49,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 13:08:49,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:49,811 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 6, 6, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:49,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 13:08:49,815 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:49,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:49,816 INFO L82 PathProgramCache]: Analyzing trace with hash -693395617, now seen corresponding path program 14 times [2020-10-13 13:08:49,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:49,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190183954] [2020-10-13 13:08:49,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:49,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:49,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:49,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:50,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:54,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:54,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 13:08:54,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:08:54,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 13:08:54,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:54,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:08:54,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:54,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:08:54,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:54,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:54,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:54,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:54,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:54,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:54,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:54,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:54,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:54,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:54,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:54,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:54,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 13:08:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:54,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:54,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:54,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:54,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 13:08:54,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:54,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 13:08:54,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:54,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:54,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:08:54,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:54,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:54,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 13:08:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:54,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:54,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:55,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:55,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 13:08:55,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:55,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 13:08:55,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:55,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:55,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:08:55,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:55,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:55,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 13:08:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:55,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:55,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:55,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:55,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 13:08:55,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:55,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 13:08:55,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:55,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:55,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:08:55,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:55,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:55,105 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-13 13:08:55,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190183954] [2020-10-13 13:08:55,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:55,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 13:08:55,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829133634] [2020-10-13 13:08:55,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:08:55,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:55,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:08:55,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:08:55,116 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 9 states. [2020-10-13 13:08:55,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:55,210 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2020-10-13 13:08:55,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 13:08:55,210 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-13 13:08:55,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:55,212 INFO L225 Difference]: With dead ends: 96 [2020-10-13 13:08:55,212 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 13:08:55,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:08:55,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 13:08:55,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-13 13:08:55,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 13:08:55,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-13 13:08:55,219 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 84 [2020-10-13 13:08:55,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:55,219 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-13 13:08:55,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:08:55,219 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-13 13:08:55,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 13:08:55,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:55,220 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:55,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 13:08:55,221 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:55,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:55,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1395633857, now seen corresponding path program 15 times [2020-10-13 13:08:55,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:55,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496424261] [2020-10-13 13:08:55,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:55,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:55,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:55,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:55,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:00,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:00,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 13:09:00,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:09:00,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 13:09:00,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:00,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:09:00,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 13:09:00,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:09:00,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:00,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:00,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:00,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:00,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:00,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:00,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:00,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:00,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:00,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:00,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:00,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:00,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 13:09:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:00,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:00,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:00,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 13:09:00,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:00,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 13:09:00,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:00,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:09:00,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:09:00,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:09:00,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:00,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 13:09:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:00,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:00,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:00,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:00,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 13:09:00,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:00,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:09:00,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:00,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:00,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:09:00,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:00,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:00,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 13:09:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:00,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:00,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:00,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:00,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 13:09:00,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:00,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 13:09:00,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:00,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:00,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:09:00,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:00,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:00,416 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-13 13:09:00,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496424261] [2020-10-13 13:09:00,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:00,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 13:09:00,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670896580] [2020-10-13 13:09:00,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:09:00,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:00,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:09:00,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:09:00,419 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 9 states. [2020-10-13 13:09:00,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:00,603 INFO L93 Difference]: Finished difference Result 97 states and 107 transitions. [2020-10-13 13:09:00,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 13:09:00,604 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-10-13 13:09:00,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:00,605 INFO L225 Difference]: With dead ends: 97 [2020-10-13 13:09:00,605 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 13:09:00,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:09:00,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 13:09:00,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-13 13:09:00,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 13:09:00,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-13 13:09:00,613 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 86 [2020-10-13 13:09:00,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:00,613 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-13 13:09:00,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:09:00,613 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-13 13:09:00,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 13:09:00,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:00,614 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:00,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 13:09:00,615 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:00,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:00,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1367983169, now seen corresponding path program 16 times [2020-10-13 13:09:00,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:00,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441589040] [2020-10-13 13:09:00,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:00,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:00,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:00,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:00,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:05,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:05,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 13:09:05,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:09:05,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:09:05,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:05,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:09:05,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-13 13:09:05,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:09:05,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:05,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:05,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:05,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:05,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:05,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:05,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:05,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:05,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:05,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:05,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:05,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:05,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 13:09:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:05,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:05,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:05,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:05,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:09:05,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:05,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 13:09:05,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:05,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:05,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:05,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:05,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:05,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 13:09:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:05,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:05,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:05,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:05,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:09:05,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:05,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 13:09:05,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:05,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:05,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:09:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:05,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:05,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:05,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:05,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:09:05,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:05,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 13:09:05,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:05,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:05,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:09:05,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:05,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:05,804 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-13 13:09:05,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441589040] [2020-10-13 13:09:05,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:05,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 13:09:05,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083294089] [2020-10-13 13:09:05,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:09:05,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:05,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:09:05,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:09:05,806 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 10 states. [2020-10-13 13:09:05,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:05,925 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2020-10-13 13:09:05,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 13:09:05,925 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-10-13 13:09:05,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:05,927 INFO L225 Difference]: With dead ends: 85 [2020-10-13 13:09:05,927 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 13:09:05,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:09:05,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 13:09:05,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-13 13:09:05,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 13:09:05,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-13 13:09:05,933 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 92 [2020-10-13 13:09:05,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:05,934 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-13 13:09:05,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:09:05,934 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-13 13:09:05,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 13:09:05,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:05,935 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 7, 7, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:05,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 13:09:05,936 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:05,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:05,936 INFO L82 PathProgramCache]: Analyzing trace with hash 905188925, now seen corresponding path program 17 times [2020-10-13 13:09:05,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:05,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856752082] [2020-10-13 13:09:05,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:05,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:05,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:05,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:06,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:10,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:10,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 13:09:10,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:09:10,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:09:10,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:10,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:09:10,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 13:09:10,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:09:10,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:10,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:10,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:10,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:10,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:10,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:10,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:10,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:10,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:10,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:10,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:10,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:10,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 13:09:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:10,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:10,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:11,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:11,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:09:11,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:11,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 13:09:11,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:11,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:11,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:11,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:11,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:11,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 13:09:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:11,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:11,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:11,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:09:11,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:11,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:09:11,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:11,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:09:11,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:09:11,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:09:11,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:11,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 13:09:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:11,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:11,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:11,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:11,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:09:11,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:11,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 13:09:11,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:09:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:11,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 88 proven. 124 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2020-10-13 13:09:11,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856752082] [2020-10-13 13:09:11,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:11,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 13:09:11,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732657139] [2020-10-13 13:09:11,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:09:11,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:11,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:09:11,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:09:11,174 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 10 states. [2020-10-13 13:09:11,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:11,350 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2020-10-13 13:09:11,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 13:09:11,351 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-13 13:09:11,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:11,352 INFO L225 Difference]: With dead ends: 105 [2020-10-13 13:09:11,352 INFO L226 Difference]: Without dead ends: 64 [2020-10-13 13:09:11,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:09:11,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-13 13:09:11,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-13 13:09:11,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 13:09:11,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-13 13:09:11,358 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 94 [2020-10-13 13:09:11,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:11,359 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-13 13:09:11,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:09:11,359 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-13 13:09:11,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 13:09:11,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:11,360 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:11,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 13:09:11,360 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:11,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:11,361 INFO L82 PathProgramCache]: Analyzing trace with hash -923175621, now seen corresponding path program 18 times [2020-10-13 13:09:11,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:11,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664864799] [2020-10-13 13:09:11,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:11,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:11,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:11,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:11,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:16,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:16,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 13:09:16,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:09:16,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 13:09:16,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:16,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:09:16,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:16,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:09:16,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:16,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:16,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:16,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:16,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:16,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:16,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:16,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:16,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:16,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:16,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:16,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:16,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 13:09:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:16,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:16,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:16,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:16,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:09:16,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:16,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 13:09:16,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:16,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:16,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 13:09:16,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:16,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:16,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 13:09:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:16,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:16,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:16,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:16,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:09:16,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:16,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 13:09:16,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:16,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:16,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 13:09:16,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:16,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:16,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 13:09:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:16,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:16,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:16,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:16,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:09:16,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:16,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 13:09:16,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:16,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:16,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 13:09:16,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:16,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:16,615 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-13 13:09:16,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664864799] [2020-10-13 13:09:16,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:16,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 13:09:16,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375688302] [2020-10-13 13:09:16,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:09:16,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:16,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:09:16,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:09:16,617 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 10 states. [2020-10-13 13:09:16,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:16,716 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2020-10-13 13:09:16,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 13:09:16,719 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 100 [2020-10-13 13:09:16,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:16,720 INFO L225 Difference]: With dead ends: 110 [2020-10-13 13:09:16,720 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 13:09:16,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:09:16,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 13:09:16,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-13 13:09:16,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 13:09:16,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-13 13:09:16,726 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 100 [2020-10-13 13:09:16,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:16,727 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-13 13:09:16,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:09:16,727 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-13 13:09:16,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 13:09:16,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:16,728 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:16,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 13:09:16,728 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:16,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:16,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1836679011, now seen corresponding path program 19 times [2020-10-13 13:09:16,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:16,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847754208] [2020-10-13 13:09:16,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:16,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:16,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:16,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:16,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:16,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:21,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:21,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 13:09:21,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:09:21,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:09:21,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:21,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:09:21,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:21,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:09:21,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:21,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:21,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:21,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:21,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:21,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:21,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:21,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:21,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:21,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:21,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:21,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:21,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 13:09:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:21,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:21,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:21,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:21,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:09:21,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:21,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 13:09:21,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:21,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:21,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 13:09:21,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:21,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:21,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 13:09:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:21,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:21,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:21,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:21,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:09:21,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:21,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 13:09:21,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:21,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:21,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 13:09:21,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:21,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:21,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:09:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:21,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:21,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:21,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:21,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:09:21,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:21,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 13:09:21,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:21,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:21,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 13:09:21,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:21,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:21,967 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-13 13:09:21,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847754208] [2020-10-13 13:09:21,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:21,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 13:09:21,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815721486] [2020-10-13 13:09:21,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:09:21,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:21,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:09:21,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:09:21,970 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 11 states. [2020-10-13 13:09:22,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:22,095 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2020-10-13 13:09:22,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 13:09:22,095 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-10-13 13:09:22,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:22,096 INFO L225 Difference]: With dead ends: 112 [2020-10-13 13:09:22,096 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 13:09:22,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:09:22,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 13:09:22,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-13 13:09:22,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 13:09:22,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-13 13:09:22,102 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 102 [2020-10-13 13:09:22,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:22,102 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-13 13:09:22,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:09:22,103 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-13 13:09:22,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 13:09:22,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:22,104 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 8, 8, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:22,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 13:09:22,104 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:22,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:22,105 INFO L82 PathProgramCache]: Analyzing trace with hash 754858879, now seen corresponding path program 20 times [2020-10-13 13:09:22,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:22,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715039304] [2020-10-13 13:09:22,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:22,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:22,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:22,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:22,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:27,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:27,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 13:09:27,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:09:27,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 13:09:27,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:27,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:09:27,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-13 13:09:27,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:09:27,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:27,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:27,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:27,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:27,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:27,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:27,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:27,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:27,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:27,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:27,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:27,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:27,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:09:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:27,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:27,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:27,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:27,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:09:27,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:27,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 13:09:27,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:27,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:27,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:27,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:27,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:27,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:09:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:27,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:27,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:27,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:27,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:09:27,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:27,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 13:09:27,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:27,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:27,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:09:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:27,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:27,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:27,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:27,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:09:27,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:27,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 13:09:27,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:27,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:27,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 13:09:27,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:27,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:27,401 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2020-10-13 13:09:27,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715039304] [2020-10-13 13:09:27,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:27,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 13:09:27,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036325576] [2020-10-13 13:09:27,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:09:27,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:27,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:09:27,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:09:27,403 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 11 states. [2020-10-13 13:09:27,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:27,506 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2020-10-13 13:09:27,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 13:09:27,506 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-13 13:09:27,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:27,508 INFO L225 Difference]: With dead ends: 95 [2020-10-13 13:09:27,508 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 13:09:27,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:09:27,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 13:09:27,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-13 13:09:27,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 13:09:27,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-13 13:09:27,514 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 104 [2020-10-13 13:09:27,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:27,514 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-13 13:09:27,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:09:27,514 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-13 13:09:27,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 13:09:27,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:27,516 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 8, 8, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:27,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 13:09:27,516 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:27,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:27,516 INFO L82 PathProgramCache]: Analyzing trace with hash -648276483, now seen corresponding path program 21 times [2020-10-13 13:09:27,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:27,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235371548] [2020-10-13 13:09:27,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:27,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:27,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:27,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:27,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:32,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:32,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 13:09:32,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:09:32,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 13:09:32,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:32,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:09:32,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 13:09:32,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:09:32,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:32,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:32,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:32,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:32,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:32,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:32,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:32,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:32,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:32,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:32,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:32,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:32,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:09:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:32,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:32,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:32,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:09:32,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:32,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 13:09:32,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:32,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:09:32,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:09:32,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:09:32,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:32,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:09:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:32,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:32,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:32,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:32,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:09:32,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:32,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 13:09:32,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:32,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:32,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 13:09:32,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:32,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:32,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:09:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:32,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:32,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:32,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:32,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:09:32,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:32,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 13:09:32,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:32,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:32,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 13:09:32,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:32,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:32,846 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-10-13 13:09:32,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235371548] [2020-10-13 13:09:32,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:32,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 13:09:32,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571403725] [2020-10-13 13:09:32,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:09:32,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:32,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:09:32,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:09:32,848 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 11 states. [2020-10-13 13:09:33,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:33,050 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-10-13 13:09:33,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 13:09:33,050 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 106 [2020-10-13 13:09:33,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:33,051 INFO L225 Difference]: With dead ends: 117 [2020-10-13 13:09:33,051 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 13:09:33,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:09:33,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 13:09:33,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-13 13:09:33,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 13:09:33,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-13 13:09:33,058 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 106 [2020-10-13 13:09:33,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:33,059 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-13 13:09:33,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:09:33,059 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-13 13:09:33,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 13:09:33,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:33,060 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:33,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 13:09:33,061 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:33,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:33,061 INFO L82 PathProgramCache]: Analyzing trace with hash 505529339, now seen corresponding path program 22 times [2020-10-13 13:09:33,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:33,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832796472] [2020-10-13 13:09:33,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:33,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:33,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:33,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:33,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:38,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:38,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 13:09:38,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:09:38,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 13:09:38,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:38,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:09:38,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:38,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:09:38,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:38,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:38,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:38,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:38,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:38,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:38,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:38,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:38,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:38,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:38,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:38,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:38,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:09:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:38,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:38,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:38,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:38,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:09:38,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:38,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 13:09:38,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:38,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:38,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:09:38,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:38,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:38,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 13:09:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:38,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:38,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:38,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:38,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:09:38,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:38,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 13:09:38,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:38,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:09:38,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:38,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:38,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 13:09:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:38,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:38,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:38,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:38,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:09:38,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:38,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 13:09:38,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:38,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:38,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:09:38,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:38,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:38,366 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-13 13:09:38,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832796472] [2020-10-13 13:09:38,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:38,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 13:09:38,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028563153] [2020-10-13 13:09:38,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:09:38,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:38,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:09:38,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:09:38,367 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-13 13:09:38,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:38,484 INFO L93 Difference]: Finished difference Result 122 states and 130 transitions. [2020-10-13 13:09:38,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:09:38,485 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-10-13 13:09:38,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:38,485 INFO L225 Difference]: With dead ends: 122 [2020-10-13 13:09:38,486 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 13:09:38,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:09:38,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 13:09:38,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-13 13:09:38,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 13:09:38,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-13 13:09:38,491 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 112 [2020-10-13 13:09:38,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:38,491 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-13 13:09:38,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:09:38,492 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-13 13:09:38,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 13:09:38,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:38,493 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 9, 9, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:38,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 13:09:38,493 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:38,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:38,494 INFO L82 PathProgramCache]: Analyzing trace with hash -341914531, now seen corresponding path program 23 times [2020-10-13 13:09:38,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:38,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254370245] [2020-10-13 13:09:38,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:38,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:38,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:38,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:38,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:43,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:43,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 13:09:43,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:09:43,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 13:09:43,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:43,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:09:43,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-13 13:09:43,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:09:43,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:43,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:43,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:43,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:43,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:43,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:43,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:43,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:43,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:43,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:43,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:43,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:43,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:09:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:43,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:43,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:43,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:43,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:09:43,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:43,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 13:09:43,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:43,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:43,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:43,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:43,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:43,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 13:09:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:43,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:43,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:43,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:09:43,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:43,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 13:09:43,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:43,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:09:43,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:09:43,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:09:43,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:43,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 13:09:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:43,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:43,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:43,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:43,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:09:43,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:43,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 13:09:43,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:43,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:43,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:09:43,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:43,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:43,827 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 148 proven. 212 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2020-10-13 13:09:43,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254370245] [2020-10-13 13:09:43,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:43,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 13:09:43,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747717788] [2020-10-13 13:09:43,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:09:43,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:43,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:09:43,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:09:43,830 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 12 states. [2020-10-13 13:09:44,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:44,051 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2020-10-13 13:09:44,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:09:44,051 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 114 [2020-10-13 13:09:44,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:44,052 INFO L225 Difference]: With dead ends: 123 [2020-10-13 13:09:44,053 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 13:09:44,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-13 13:09:44,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 13:09:44,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-13 13:09:44,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 13:09:44,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-13 13:09:44,059 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 114 [2020-10-13 13:09:44,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:44,059 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-13 13:09:44,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:09:44,059 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-13 13:09:44,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 13:09:44,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:44,061 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 9, 9, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:44,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 13:09:44,061 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:44,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:44,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1351414363, now seen corresponding path program 24 times [2020-10-13 13:09:44,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:44,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739003335] [2020-10-13 13:09:44,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:44,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:44,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:44,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:44,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:49,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 13:09:49,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:09:49,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:09:49,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:49,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:09:49,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 13:09:49,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:09:49,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:49,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:49,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:49,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:49,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:49,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:49,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:49,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:49,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:49,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:49,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:49,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:09:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:49,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:49,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 13:09:49,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:49,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 13:09:49,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:49,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:49,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:49,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:49,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:49,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 13:09:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:49,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:49,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 13:09:49,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:49,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 13:09:49,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:49,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:49,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:49,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:49,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:49,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 13:09:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:49,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:49,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 13:09:49,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:49,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 13:09:49,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:49,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:49,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:09:49,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:49,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:49,394 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2020-10-13 13:09:49,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739003335] [2020-10-13 13:09:49,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:49,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 13:09:49,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816857219] [2020-10-13 13:09:49,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:09:49,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:49,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:09:49,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:09:49,396 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 12 states. [2020-10-13 13:09:49,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:49,524 INFO L93 Difference]: Finished difference Result 106 states and 111 transitions. [2020-10-13 13:09:49,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:09:49,525 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 120 [2020-10-13 13:09:49,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:49,526 INFO L225 Difference]: With dead ends: 106 [2020-10-13 13:09:49,526 INFO L226 Difference]: Without dead ends: 77 [2020-10-13 13:09:49,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:09:49,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-13 13:09:49,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-13 13:09:49,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 13:09:49,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-13 13:09:49,532 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 120 [2020-10-13 13:09:49,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:49,532 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-13 13:09:49,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:09:49,532 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-13 13:09:49,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 13:09:49,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:49,533 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 9, 9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:49,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 13:09:49,534 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:49,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:49,534 INFO L82 PathProgramCache]: Analyzing trace with hash 862348761, now seen corresponding path program 25 times [2020-10-13 13:09:49,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:49,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595374626] [2020-10-13 13:09:49,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:49,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:54,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:54,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 13:09:54,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 13:09:54,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:09:54,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:54,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:09:54,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 13:09:54,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 13:09:54,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:54,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:54,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:54,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:54,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:54,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:54,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:54,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:54,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:54,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:54,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:54,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:54,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:09:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:54,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:54,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:54,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:54,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 13:09:54,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:54,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 13:09:54,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:54,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:54,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:54,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:54,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:54,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 13:09:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:54,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:54,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:54,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 13:09:54,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:54,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 13:09:54,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:54,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:09:54,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:09:54,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 13:09:54,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:54,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 13:09:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:54,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:54,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:54,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:54,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 13:09:54,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:54,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 13:09:54,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:54,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:54,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:09:54,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:54,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:54,896 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 184 proven. 265 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2020-10-13 13:09:54,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595374626] [2020-10-13 13:09:54,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:54,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 13:09:54,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188322741] [2020-10-13 13:09:54,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:09:54,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:54,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:09:54,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:09:54,898 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 13 states. [2020-10-13 13:09:55,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:55,139 INFO L93 Difference]: Finished difference Result 130 states and 140 transitions. [2020-10-13 13:09:55,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:09:55,139 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 122 [2020-10-13 13:09:55,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:55,140 INFO L225 Difference]: With dead ends: 130 [2020-10-13 13:09:55,140 INFO L226 Difference]: Without dead ends: 79 [2020-10-13 13:09:55,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-13 13:09:55,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-13 13:09:55,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-13 13:09:55,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 13:09:55,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-13 13:09:55,147 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 122 [2020-10-13 13:09:55,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:55,147 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-13 13:09:55,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:09:55,147 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-13 13:09:55,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 13:09:55,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:55,149 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 9, 9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:55,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 13:09:55,149 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:55,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:55,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1738744361, now seen corresponding path program 26 times [2020-10-13 13:09:55,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:55,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386063760] [2020-10-13 13:09:55,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:55,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:56,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:05,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:05,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 13:10:05,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:05,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10021 [2020-10-13 13:10:05,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:05,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:10:05,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:10:05,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 13:10:05,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:05,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:05,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:05,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:05,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:05,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:05,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:05,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:05,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:05,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:05,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:05,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:05,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:10:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:05,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:05,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:05,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:05,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:05,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:10:05,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:05,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:05,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:10:05,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:05,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:05,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 13:10:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:05,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:05,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:05,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:05,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:05,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:10:05,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:05,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:05,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:10:05,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:05,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:05,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 13:10:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:05,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:05,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:05,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:05,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:05,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:10:05,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:05,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:05,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:10:05,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:05,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:05,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2020-10-13 13:10:05,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386063760] [2020-10-13 13:10:05,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:05,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 13:10:05,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091709207] [2020-10-13 13:10:05,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:10:05,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:05,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:10:05,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:10:05,397 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 13 states. [2020-10-13 13:10:05,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:05,530 INFO L93 Difference]: Finished difference Result 135 states and 143 transitions. [2020-10-13 13:10:05,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:10:05,531 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 128 [2020-10-13 13:10:05,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:05,532 INFO L225 Difference]: With dead ends: 135 [2020-10-13 13:10:05,532 INFO L226 Difference]: Without dead ends: 81 [2020-10-13 13:10:05,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:10:05,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-13 13:10:05,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-13 13:10:05,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 13:10:05,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-13 13:10:05,538 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 128 [2020-10-13 13:10:05,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:05,538 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-13 13:10:05,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:10:05,538 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-13 13:10:05,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 13:10:05,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:05,540 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:05,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 13:10:05,540 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:05,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:05,540 INFO L82 PathProgramCache]: Analyzing trace with hash -70196679, now seen corresponding path program 27 times [2020-10-13 13:10:05,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:05,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19676765] [2020-10-13 13:10:05,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:06,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:15,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:15,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 13:10:15,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:15,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9112 [2020-10-13 13:10:15,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:15,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 92 [2020-10-13 13:10:15,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 13:10:15,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 13:10:15,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0