/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/max20-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:12:58,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:12:58,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:12:58,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:12:58,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:12:58,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:12:58,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:12:58,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:12:58,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:12:58,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:12:58,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:12:58,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:12:58,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:12:58,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:12:58,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:12:58,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:12:58,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:12:58,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:12:58,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:12:58,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:12:58,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:12:58,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:12:58,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:12:58,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:12:58,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:12:58,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:12:58,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:12:58,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:12:58,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:12:58,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:12:58,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:12:58,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:12:58,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:12:58,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:12:58,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:12:58,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:12:58,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:12:58,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:12:58,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:12:58,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:12:58,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:12:58,126 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 02:12:58,169 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:12:58,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:12:58,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:12:58,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:12:58,172 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:12:58,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:12:58,173 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:12:58,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:12:58,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:12:58,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:12:58,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:12:58,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:12:58,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:12:58,176 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:12:58,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:12:58,176 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:12:58,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:12:58,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:12:58,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:12:58,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:12:58,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:12:58,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:12:58,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:12:58,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:12:58,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:12:58,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:12:58,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:12:58,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:12:58,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:12:58,179 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 02:12:58,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:12:58,497 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:12:58,502 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:12:58,503 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:12:58,503 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:12:58,504 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max20-1.i [2020-10-15 02:12:58,572 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44f99987f/68de4a56204247fb962887d5722ae02b/FLAGe30823ab1 [2020-10-15 02:12:59,043 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:12:59,044 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/max20-1.i [2020-10-15 02:12:59,051 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44f99987f/68de4a56204247fb962887d5722ae02b/FLAGe30823ab1 [2020-10-15 02:12:59,381 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44f99987f/68de4a56204247fb962887d5722ae02b [2020-10-15 02:12:59,391 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:12:59,393 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:12:59,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:12:59,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:12:59,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:12:59,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:12:59" (1/1) ... [2020-10-15 02:12:59,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ef601eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:59, skipping insertion in model container [2020-10-15 02:12:59,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:12:59" (1/1) ... [2020-10-15 02:12:59,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:12:59,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:12:59,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:12:59,610 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:12:59,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:12:59,658 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:12:59,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:59 WrapperNode [2020-10-15 02:12:59,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:12:59,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:12:59,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:12:59,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:12:59,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:59" (1/1) ... [2020-10-15 02:12:59,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:59" (1/1) ... [2020-10-15 02:12:59,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:59" (1/1) ... [2020-10-15 02:12:59,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:59" (1/1) ... [2020-10-15 02:12:59,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:59" (1/1) ... [2020-10-15 02:12:59,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:59" (1/1) ... [2020-10-15 02:12:59,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:59" (1/1) ... [2020-10-15 02:12:59,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:12:59,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:12:59,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:12:59,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:12:59,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:12:59,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:12:59,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:12:59,861 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2020-10-15 02:12:59,861 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:12:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:12:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 02:12:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure max [2020-10-15 02:12:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 02:12:59,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:12:59,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 02:12:59,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 02:12:59,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 02:12:59,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:12:59,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:13:00,155 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:13:00,156 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-15 02:13:00,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:13:00 BoogieIcfgContainer [2020-10-15 02:13:00,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:13:00,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:13:00,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:13:00,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:13:00,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:12:59" (1/3) ... [2020-10-15 02:13:00,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe046b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:13:00, skipping insertion in model container [2020-10-15 02:13:00,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:59" (2/3) ... [2020-10-15 02:13:00,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe046b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:13:00, skipping insertion in model container [2020-10-15 02:13:00,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:13:00" (3/3) ... [2020-10-15 02:13:00,175 INFO L109 eAbstractionObserver]: Analyzing ICFG max20-1.i [2020-10-15 02:13:00,203 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:13:00,220 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 02:13:00,244 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 02:13:00,270 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:13:00,271 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:13:00,271 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:13:00,271 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:13:00,271 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:13:00,271 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:13:00,272 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:13:00,272 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:13:00,289 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-15 02:13:00,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-15 02:13:00,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:00,296 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] [2020-10-15 02:13:00,296 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:00,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:00,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1379671032, now seen corresponding path program 1 times [2020-10-15 02:13:00,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:00,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678043635] [2020-10-15 02:13:00,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:00,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:00,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:00,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:00,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:00,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:01,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:01,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:01,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 02:13:01,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:13:01,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1294 [2020-10-15 02:13:01,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:01,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:01,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:13:01,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:13:01,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 02:13:01,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 02:13:01,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:01,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:01,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:01,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:01,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:01,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:13:01,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:01,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:01,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:01,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:01,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:01,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:01,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:01,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:01,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:01,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:01,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:13:01,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:01,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 02:13:01,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:01,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:01,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:13:01,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:01,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:13:01,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:02,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-15 02:13:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:02,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:02,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:02,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:02,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:13:02,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:02,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-15 02:13:02,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:02,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:02,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:13:02,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:02,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:13:02,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:02,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:13:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:02,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:02,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:02,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:02,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:13:02,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:02,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-15 02:13:02,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:02,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:02,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:13:02,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:02,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:13:02,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:02,120 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 02:13:02,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678043635] [2020-10-15 02:13:02,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:13:02,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 02:13:02,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412929382] [2020-10-15 02:13:02,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:13:02,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:02,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:13:02,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:13:02,149 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 11 states. [2020-10-15 02:13:02,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:02,567 INFO L93 Difference]: Finished difference Result 89 states and 129 transitions. [2020-10-15 02:13:02,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 02:13:02,569 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-15 02:13:02,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:02,582 INFO L225 Difference]: With dead ends: 89 [2020-10-15 02:13:02,582 INFO L226 Difference]: Without dead ends: 54 [2020-10-15 02:13:02,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-15 02:13:02,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-15 02:13:02,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2020-10-15 02:13:02,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-15 02:13:02,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2020-10-15 02:13:02,648 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 32 [2020-10-15 02:13:02,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:02,648 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2020-10-15 02:13:02,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:13:02,648 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2020-10-15 02:13:02,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-15 02:13:02,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:02,652 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, 1, 1, 1, 1] [2020-10-15 02:13:02,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:13:02,652 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:02,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:02,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1328588870, now seen corresponding path program 1 times [2020-10-15 02:13:02,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:02,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004109205] [2020-10-15 02:13:02,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:02,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:02,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:02,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:02,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:02,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:03,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:03,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-15 02:13:03,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:13:03,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1136 [2020-10-15 02:13:03,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:03,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:03,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:13:03,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 02:13:03,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:13:03,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:03,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:03,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:03,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:03,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:03,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:03,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:03,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:03,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:03,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:03,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:03,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:03,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:03,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:03,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:03,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:03,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:03,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:13:03,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:03,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:13:03,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:03,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:03,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:13:03,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:03,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:13:03,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:03,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-15 02:13:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:03,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:03,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:03,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:03,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:13:03,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:03,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:13:03,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:03,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:03,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:13:03,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:03,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:13:03,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:03,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:13:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:03,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:03,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:03,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 02:13:03,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:03,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 02:13:03,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:03,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:03,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:13:03,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:03,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:13:03,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:03,926 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 02:13:03,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004109205] [2020-10-15 02:13:03,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:03,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 02:13:03,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87154076] [2020-10-15 02:13:03,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:13:03,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:03,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:13:03,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:13:03,933 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand 5 states. [2020-10-15 02:13:04,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:04,092 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2020-10-15 02:13:04,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:13:04,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-15 02:13:04,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:04,095 INFO L225 Difference]: With dead ends: 66 [2020-10-15 02:13:04,095 INFO L226 Difference]: Without dead ends: 36 [2020-10-15 02:13:04,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:13:04,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-15 02:13:04,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-10-15 02:13:04,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-15 02:13:04,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-15 02:13:04,117 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 36 [2020-10-15 02:13:04,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:04,117 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-15 02:13:04,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:13:04,118 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-15 02:13:04,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 02:13:04,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:04,123 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-15 02:13:04,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 02:13:04,124 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:04,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:04,124 INFO L82 PathProgramCache]: Analyzing trace with hash 981704641, now seen corresponding path program 2 times [2020-10-15 02:13:04,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:04,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232538652] [2020-10-15 02:13:04,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:04,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:04,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:04,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:04,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:04,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:06,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:07,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:09,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:09,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 02:13:09,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:13:09,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 02:13:09,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:09,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:09,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:13:09,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:13:09,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:13:09,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:09,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:09,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:09,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:09,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:09,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:09,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:13:09,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:09,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:09,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:09,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:09,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:09,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:09,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:09,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:09,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:09,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:09,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 02:13:09,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:09,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-15 02:13:09,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:09,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:09,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:13:09,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:09,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 02:13:09,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:09,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-15 02:13:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:09,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:09,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:09,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:09,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 02:13:09,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:09,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-15 02:13:09,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:09,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:09,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:13:09,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:09,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 02:13:09,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:09,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-15 02:13:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:09,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:09,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:09,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:09,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 02:13:09,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:09,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-15 02:13:09,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:09,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:09,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:13:09,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:09,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 02:13:09,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:13:09,991 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 72 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 02:13:09,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232538652] [2020-10-15 02:13:09,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:09,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 02:13:09,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318816589] [2020-10-15 02:13:09,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 02:13:09,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:09,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 02:13:09,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-15 02:13:09,995 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 14 states. [2020-10-15 02:13:11,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:11,083 INFO L93 Difference]: Finished difference Result 112 states and 146 transitions. [2020-10-15 02:13:11,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 02:13:11,084 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2020-10-15 02:13:11,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:11,088 INFO L225 Difference]: With dead ends: 112 [2020-10-15 02:13:11,089 INFO L226 Difference]: Without dead ends: 88 [2020-10-15 02:13:11,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2020-10-15 02:13:11,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-15 02:13:11,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 72. [2020-10-15 02:13:11,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-15 02:13:11,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2020-10-15 02:13:11,124 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 56 [2020-10-15 02:13:11,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:11,125 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2020-10-15 02:13:11,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 02:13:11,126 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2020-10-15 02:13:11,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 02:13:11,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:11,136 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:11,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 02:13:11,136 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:11,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:11,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1260494052, now seen corresponding path program 1 times [2020-10-15 02:13:11,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:11,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879839670] [2020-10-15 02:13:11,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:11,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:11,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:11,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:11,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:13,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:14,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:16,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:16,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 02:13:16,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:13:16,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 02:13:16,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:16,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:16,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:13:16,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-15 02:13:16,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:13:16,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:16,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:16,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:16,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:16,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:16,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:16,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:13:16,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:16,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:16,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:16,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:16,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:16,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:16,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:16,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:16,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:16,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:16,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 02:13:16,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:16,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-15 02:13:16,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:16,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:13:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:13:16,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:16,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 02:13:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:16,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:16,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:16,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:16,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 02:13:16,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:16,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-15 02:13:16,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:16,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:16,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:13:16,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:16,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:13:16,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:16,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-15 02:13:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:16,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:16,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:16,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:16,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 02:13:16,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:16,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-15 02:13:16,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:16,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:16,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:13:16,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:16,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 02:13:16,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:16,741 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 29 proven. 138 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-15 02:13:16,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879839670] [2020-10-15 02:13:16,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:16,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-15 02:13:16,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34015210] [2020-10-15 02:13:16,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 02:13:16,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:16,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 02:13:16,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2020-10-15 02:13:16,749 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand 18 states. [2020-10-15 02:13:18,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:18,054 INFO L93 Difference]: Finished difference Result 203 states and 290 transitions. [2020-10-15 02:13:18,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-15 02:13:18,054 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 68 [2020-10-15 02:13:18,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:18,058 INFO L225 Difference]: With dead ends: 203 [2020-10-15 02:13:18,060 INFO L226 Difference]: Without dead ends: 140 [2020-10-15 02:13:18,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722 [2020-10-15 02:13:18,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-15 02:13:18,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 124. [2020-10-15 02:13:18,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-15 02:13:18,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 165 transitions. [2020-10-15 02:13:18,108 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 165 transitions. Word has length 68 [2020-10-15 02:13:18,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:18,109 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 165 transitions. [2020-10-15 02:13:18,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 02:13:18,109 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 165 transitions. [2020-10-15 02:13:18,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-15 02:13:18,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:18,115 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 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] [2020-10-15 02:13:18,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 02:13:18,115 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:18,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:18,116 INFO L82 PathProgramCache]: Analyzing trace with hash 587346034, now seen corresponding path program 1 times [2020-10-15 02:13:18,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:18,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129555270] [2020-10-15 02:13:18,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:18,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:18,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:18,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:18,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:19,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:19,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:19,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:21,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:21,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:21,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:23,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:23,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 02:13:23,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 02:13:23,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 02:13:23,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:23,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:23,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 02:13:23,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:13:23,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 02:13:23,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:23,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:23,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:23,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:23,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:23,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:23,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:23,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:23,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:23,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:23,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:23,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:23,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:23,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:23,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:23,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:23,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:23,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-15 02:13:23,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:23,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:23,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:13:23,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:23,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 02:13:23,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:23,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-15 02:13:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:23,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:23,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:23,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:23,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:23,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:23,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-15 02:13:23,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:23,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:23,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:13:23,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:23,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 02:13:23,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:23,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-15 02:13:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:23,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:23,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:24,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:24,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:24,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:24,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-15 02:13:24,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:24,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:24,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:13:24,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:24,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 02:13:24,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:24,237 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 117 proven. 295 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-15 02:13:24,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129555270] [2020-10-15 02:13:24,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:24,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-15 02:13:24,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280392017] [2020-10-15 02:13:24,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 02:13:24,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:24,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 02:13:24,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2020-10-15 02:13:24,241 INFO L87 Difference]: Start difference. First operand 124 states and 165 transitions. Second operand 19 states. [2020-10-15 02:13:25,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:25,267 INFO L93 Difference]: Finished difference Result 250 states and 337 transitions. [2020-10-15 02:13:25,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 02:13:25,268 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 94 [2020-10-15 02:13:25,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:25,271 INFO L225 Difference]: With dead ends: 250 [2020-10-15 02:13:25,271 INFO L226 Difference]: Without dead ends: 135 [2020-10-15 02:13:25,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=272, Invalid=1060, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 02:13:25,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-15 02:13:25,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 111. [2020-10-15 02:13:25,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-15 02:13:25,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 144 transitions. [2020-10-15 02:13:25,288 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 144 transitions. Word has length 94 [2020-10-15 02:13:25,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:25,291 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 144 transitions. [2020-10-15 02:13:25,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 02:13:25,292 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 144 transitions. [2020-10-15 02:13:25,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-15 02:13:25,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:25,294 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:25,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 02:13:25,294 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:25,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:25,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1986084589, now seen corresponding path program 2 times [2020-10-15 02:13:25,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:25,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377547686] [2020-10-15 02:13:25,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:25,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:25,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:25,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:25,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:30,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:30,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-15 02:13:30,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:13:30,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 02:13:30,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:30,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:30,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:13:30,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-15 02:13:30,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:13:30,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:30,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:30,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:30,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:30,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:30,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:30,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:30,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:30,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:30,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:30,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:30,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:30,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:30,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:30,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:30,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:30,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:30,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 02:13:30,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:30,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-15 02:13:30,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:30,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:30,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:13:30,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:30,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:13:30,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:30,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 02:13:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:30,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:30,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:30,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 02:13:30,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:30,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-15 02:13:30,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:30,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:30,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:13:30,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:30,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:13:30,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:30,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-15 02:13:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:30,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:30,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:30,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:30,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 02:13:30,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:30,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-15 02:13:30,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:30,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:30,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:13:30,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:30,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:13:30,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:30,654 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 198 proven. 396 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-15 02:13:30,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377547686] [2020-10-15 02:13:30,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:30,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 02:13:30,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846983704] [2020-10-15 02:13:30,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 02:13:30,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:30,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 02:13:30,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-15 02:13:30,657 INFO L87 Difference]: Start difference. First operand 111 states and 144 transitions. Second operand 10 states. [2020-10-15 02:13:30,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:30,920 INFO L93 Difference]: Finished difference Result 239 states and 325 transitions. [2020-10-15 02:13:30,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 02:13:30,921 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-10-15 02:13:30,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:30,923 INFO L225 Difference]: With dead ends: 239 [2020-10-15 02:13:30,923 INFO L226 Difference]: Without dead ends: 137 [2020-10-15 02:13:30,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-15 02:13:30,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-15 02:13:30,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 123. [2020-10-15 02:13:30,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-15 02:13:30,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 159 transitions. [2020-10-15 02:13:30,940 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 159 transitions. Word has length 104 [2020-10-15 02:13:30,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:30,941 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 159 transitions. [2020-10-15 02:13:30,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 02:13:30,941 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 159 transitions. [2020-10-15 02:13:30,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-15 02:13:30,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:30,943 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 19, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:30,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 02:13:30,944 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:30,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:30,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1470577800, now seen corresponding path program 3 times [2020-10-15 02:13:30,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:30,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735226329] [2020-10-15 02:13:30,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:30,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:30,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:30,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:31,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:35,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:35,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-15 02:13:35,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:13:35,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 02:13:35,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:35,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:35,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:13:35,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-15 02:13:35,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 02:13:35,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:35,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:35,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:35,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:35,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:35,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:35,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:35,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:35,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:35,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:35,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:35,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:35,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:35,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:35,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:35,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:36,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:36,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 02:13:36,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:36,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-15 02:13:36,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:36,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:36,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:13:36,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:36,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 02:13:36,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:36,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-15 02:13:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:36,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:36,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:36,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 02:13:36,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:36,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-15 02:13:36,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:36,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:36,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:13:36,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:36,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 02:13:36,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:36,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-15 02:13:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:36,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:36,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:36,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:36,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 02:13:36,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:36,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-15 02:13:36,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:36,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:36,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:13:36,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:36,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 02:13:36,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:36,360 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 273 proven. 546 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-15 02:13:36,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735226329] [2020-10-15 02:13:36,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:36,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 02:13:36,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861811915] [2020-10-15 02:13:36,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:13:36,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:36,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:13:36,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:13:36,363 INFO L87 Difference]: Start difference. First operand 123 states and 159 transitions. Second operand 11 states. [2020-10-15 02:13:36,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:36,634 INFO L93 Difference]: Finished difference Result 263 states and 355 transitions. [2020-10-15 02:13:36,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 02:13:36,634 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 116 [2020-10-15 02:13:36,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:36,637 INFO L225 Difference]: With dead ends: 263 [2020-10-15 02:13:36,637 INFO L226 Difference]: Without dead ends: 149 [2020-10-15 02:13:36,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-15 02:13:36,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-15 02:13:36,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 135. [2020-10-15 02:13:36,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-15 02:13:36,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 174 transitions. [2020-10-15 02:13:36,656 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 174 transitions. Word has length 116 [2020-10-15 02:13:36,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:36,656 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 174 transitions. [2020-10-15 02:13:36,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:13:36,656 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 174 transitions. [2020-10-15 02:13:36,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-15 02:13:36,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:36,659 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 22, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:36,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 02:13:36,659 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:36,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:36,659 INFO L82 PathProgramCache]: Analyzing trace with hash 800369059, now seen corresponding path program 4 times [2020-10-15 02:13:36,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:36,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109252995] [2020-10-15 02:13:36,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:36,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:36,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:36,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:36,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:41,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:41,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-15 02:13:41,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:13:41,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-15 02:13:41,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:41,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:41,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:13:41,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-15 02:13:41,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 02:13:41,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:41,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:41,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:41,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:41,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:41,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:41,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:41,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:41,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:41,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:41,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:41,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:41,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:41,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:41,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:41,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:41,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:41,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 02:13:41,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:41,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-15 02:13:41,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:41,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:41,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:13:41,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:41,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 02:13:41,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:41,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-15 02:13:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:41,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:41,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:41,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 02:13:41,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:41,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-15 02:13:41,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:41,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:41,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:13:41,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:41,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 02:13:41,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:41,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-15 02:13:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:41,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:41,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:42,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:42,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 02:13:42,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:42,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-15 02:13:42,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:42,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:42,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:13:42,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:42,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 02:13:42,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:42,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 360 proven. 720 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-15 02:13:42,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109252995] [2020-10-15 02:13:42,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:42,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 02:13:42,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230904367] [2020-10-15 02:13:42,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 02:13:42,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:42,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 02:13:42,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-15 02:13:42,111 INFO L87 Difference]: Start difference. First operand 135 states and 174 transitions. Second operand 12 states. [2020-10-15 02:13:42,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:42,411 INFO L93 Difference]: Finished difference Result 287 states and 385 transitions. [2020-10-15 02:13:42,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 02:13:42,412 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-10-15 02:13:42,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:42,414 INFO L225 Difference]: With dead ends: 287 [2020-10-15 02:13:42,414 INFO L226 Difference]: Without dead ends: 161 [2020-10-15 02:13:42,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-15 02:13:42,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-15 02:13:42,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 147. [2020-10-15 02:13:42,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-15 02:13:42,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 189 transitions. [2020-10-15 02:13:42,433 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 189 transitions. Word has length 128 [2020-10-15 02:13:42,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:42,434 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 189 transitions. [2020-10-15 02:13:42,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 02:13:42,434 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 189 transitions. [2020-10-15 02:13:42,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-15 02:13:42,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:42,437 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 25, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:42,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 02:13:42,437 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:42,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:42,438 INFO L82 PathProgramCache]: Analyzing trace with hash 617170494, now seen corresponding path program 5 times [2020-10-15 02:13:42,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:42,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969465620] [2020-10-15 02:13:42,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:42,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:42,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:42,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:42,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:47,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:47,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-15 02:13:47,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:13:47,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-15 02:13:47,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:47,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:47,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:13:47,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:13:47,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:13:47,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:47,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:47,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:47,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:47,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:47,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:47,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:47,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:47,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:47,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:47,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:47,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:47,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:47,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:47,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:47,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:47,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 02:13:47,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:47,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-15 02:13:47,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:47,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:47,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:13:47,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:47,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:13:47,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:47,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-15 02:13:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:47,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:47,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:47,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:47,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 02:13:47,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:47,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-15 02:13:47,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:47,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:47,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:13:47,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:47,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:13:47,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:48,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-15 02:13:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:48,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:48,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:48,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:48,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 02:13:48,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:48,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-15 02:13:48,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:48,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:48,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:13:48,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:48,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:13:48,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:48,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 459 proven. 918 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-15 02:13:48,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969465620] [2020-10-15 02:13:48,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:48,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 02:13:48,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164244986] [2020-10-15 02:13:48,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 02:13:48,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:48,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 02:13:48,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-15 02:13:48,249 INFO L87 Difference]: Start difference. First operand 147 states and 189 transitions. Second operand 13 states. [2020-10-15 02:13:48,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:48,593 INFO L93 Difference]: Finished difference Result 311 states and 415 transitions. [2020-10-15 02:13:48,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 02:13:48,594 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 140 [2020-10-15 02:13:48,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:48,596 INFO L225 Difference]: With dead ends: 311 [2020-10-15 02:13:48,596 INFO L226 Difference]: Without dead ends: 173 [2020-10-15 02:13:48,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-15 02:13:48,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-15 02:13:48,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 159. [2020-10-15 02:13:48,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-15 02:13:48,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 204 transitions. [2020-10-15 02:13:48,616 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 204 transitions. Word has length 140 [2020-10-15 02:13:48,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:48,616 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 204 transitions. [2020-10-15 02:13:48,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 02:13:48,617 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 204 transitions. [2020-10-15 02:13:48,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-15 02:13:48,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:48,620 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 28, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:48,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 02:13:48,621 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:48,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:48,621 INFO L82 PathProgramCache]: Analyzing trace with hash -217787815, now seen corresponding path program 6 times [2020-10-15 02:13:48,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:48,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753459984] [2020-10-15 02:13:48,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:48,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:48,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:48,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:48,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:53,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:53,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-15 02:13:53,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:13:53,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 02:13:53,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:53,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:53,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:13:53,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-15 02:13:53,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 02:13:53,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:53,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:53,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:53,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:53,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:53,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:53,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:53,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:53,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:53,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:53,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:53,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:53,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:53,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:53,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:53,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:53,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 02:13:53,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:53,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-15 02:13:53,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:53,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:53,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:13:53,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:53,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 02:13:53,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:54,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-15 02:13:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:54,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:54,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:54,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 02:13:54,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:54,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-15 02:13:54,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:54,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:54,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:13:54,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:54,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 02:13:54,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:54,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-15 02:13:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:54,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:54,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:54,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:54,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 02:13:54,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:54,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-15 02:13:54,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:54,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:54,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:13:54,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:54,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 02:13:54,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:54,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1845 backedges. 570 proven. 1140 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-15 02:13:54,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753459984] [2020-10-15 02:13:54,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:54,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 02:13:54,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890610096] [2020-10-15 02:13:54,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 02:13:54,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:54,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 02:13:54,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-15 02:13:54,686 INFO L87 Difference]: Start difference. First operand 159 states and 204 transitions. Second operand 14 states. [2020-10-15 02:13:55,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:55,036 INFO L93 Difference]: Finished difference Result 335 states and 445 transitions. [2020-10-15 02:13:55,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 02:13:55,037 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 152 [2020-10-15 02:13:55,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:55,040 INFO L225 Difference]: With dead ends: 335 [2020-10-15 02:13:55,041 INFO L226 Difference]: Without dead ends: 185 [2020-10-15 02:13:55,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-15 02:13:55,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-15 02:13:55,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 171. [2020-10-15 02:13:55,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-15 02:13:55,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 219 transitions. [2020-10-15 02:13:55,070 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 219 transitions. Word has length 152 [2020-10-15 02:13:55,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:55,071 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 219 transitions. [2020-10-15 02:13:55,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 02:13:55,072 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 219 transitions. [2020-10-15 02:13:55,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-15 02:13:55,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:55,076 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 31, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:55,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 02:13:55,076 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:55,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:55,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1550257652, now seen corresponding path program 7 times [2020-10-15 02:13:55,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:55,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239246478] [2020-10-15 02:13:55,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:55,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:55,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:55,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:55,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:55,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:00,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:00,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-15 02:14:00,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:14:00,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 02:14:00,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:00,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:00,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:14:00,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:14:00,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 02:14:00,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:00,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:00,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:00,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:00,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:00,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:00,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:14:00,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:00,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:00,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:00,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:00,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:00,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:14:00,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:00,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:00,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:00,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-15 02:14:00,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:00,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-15 02:14:00,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:00,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:00,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:14:00,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:00,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 02:14:00,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:00,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-15 02:14:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:00,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:00,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:00,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:00,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-15 02:14:00,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:00,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-15 02:14:00,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:00,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:00,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:14:00,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:00,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 02:14:00,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:00,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-15 02:14:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:00,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:00,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:00,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:00,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-15 02:14:00,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:00,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-15 02:14:00,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:00,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:00,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:14:00,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:00,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 02:14:00,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:00,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2226 backedges. 693 proven. 1386 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-15 02:14:00,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239246478] [2020-10-15 02:14:00,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:00,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-15 02:14:00,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423804950] [2020-10-15 02:14:00,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 02:14:00,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:00,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 02:14:00,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-15 02:14:00,868 INFO L87 Difference]: Start difference. First operand 171 states and 219 transitions. Second operand 15 states. [2020-10-15 02:14:01,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:01,272 INFO L93 Difference]: Finished difference Result 359 states and 475 transitions. [2020-10-15 02:14:01,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 02:14:01,273 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 164 [2020-10-15 02:14:01,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:01,275 INFO L225 Difference]: With dead ends: 359 [2020-10-15 02:14:01,275 INFO L226 Difference]: Without dead ends: 197 [2020-10-15 02:14:01,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-15 02:14:01,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-15 02:14:01,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 183. [2020-10-15 02:14:01,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-15 02:14:01,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 234 transitions. [2020-10-15 02:14:01,292 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 234 transitions. Word has length 164 [2020-10-15 02:14:01,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:01,292 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 234 transitions. [2020-10-15 02:14:01,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 02:14:01,292 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 234 transitions. [2020-10-15 02:14:01,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-15 02:14:01,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:01,296 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 34, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:01,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 02:14:01,296 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:01,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:01,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1731217137, now seen corresponding path program 8 times [2020-10-15 02:14:01,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:01,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983439209] [2020-10-15 02:14:01,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:01,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:01,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:01,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:01,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:05,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:05,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:06,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:06,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-15 02:14:06,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:14:06,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 02:14:06,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:06,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:06,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 56 [2020-10-15 02:14:06,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:14:06,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-15 02:14:06,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:06,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:06,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:06,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:06,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:06,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:06,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:14:06,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:06,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:06,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:06,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:06,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:06,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:07,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:07,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 02:14:07,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:07,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1222 [2020-10-15 02:14:07,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:07,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:07,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:14:07,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:07,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 02:14:07,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:07,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-15 02:14:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:07,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:07,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:08,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:08,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 02:14:08,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:08,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-15 02:14:08,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:08,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:08,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:14:08,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:08,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 02:14:08,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:08,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-15 02:14:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:08,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:08,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:08,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:08,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 02:14:08,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:08,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-15 02:14:08,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:08,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:08,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:14:08,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:08,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 02:14:08,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:08,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2643 backedges. 828 proven. 1656 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-15 02:14:08,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983439209] [2020-10-15 02:14:08,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:08,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-15 02:14:08,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723662040] [2020-10-15 02:14:08,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 02:14:08,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:08,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 02:14:08,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2020-10-15 02:14:08,418 INFO L87 Difference]: Start difference. First operand 183 states and 234 transitions. Second operand 18 states. [2020-10-15 02:14:08,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:08,873 INFO L93 Difference]: Finished difference Result 383 states and 505 transitions. [2020-10-15 02:14:08,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 02:14:08,874 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 176 [2020-10-15 02:14:08,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:08,878 INFO L225 Difference]: With dead ends: 383 [2020-10-15 02:14:08,878 INFO L226 Difference]: Without dead ends: 209 [2020-10-15 02:14:08,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=319, Invalid=611, Unknown=0, NotChecked=0, Total=930 [2020-10-15 02:14:08,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-15 02:14:08,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 195. [2020-10-15 02:14:08,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-15 02:14:08,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 249 transitions. [2020-10-15 02:14:08,898 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 249 transitions. Word has length 176 [2020-10-15 02:14:08,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:08,899 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 249 transitions. [2020-10-15 02:14:08,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 02:14:08,899 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 249 transitions. [2020-10-15 02:14:08,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-15 02:14:08,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:08,903 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 37, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:08,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 02:14:08,903 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:08,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:08,904 INFO L82 PathProgramCache]: Analyzing trace with hash -973171798, now seen corresponding path program 9 times [2020-10-15 02:14:08,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:08,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240171070] [2020-10-15 02:14:08,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:08,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:08,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:08,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:08,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:09,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:13,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:13,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-15 02:14:13,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:14:13,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 02:14:13,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:13,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:13,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 53 [2020-10-15 02:14:13,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:14:13,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-15 02:14:13,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:13,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:13,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:13,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:13,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:13,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:13,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:14:13,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:13,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:13,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:13,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:13,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:13,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:13,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:13,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:14,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:15,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:15,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 02:14:15,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:15,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1276 [2020-10-15 02:14:15,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:15,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:15,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:14:15,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:15,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 02:14:15,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:15,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-15 02:14:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:15,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:15,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:15,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:15,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 02:14:15,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:15,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-15 02:14:15,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:15,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:15,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:14:15,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:15,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 02:14:15,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:15,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-15 02:14:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:15,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:15,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:15,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:15,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 02:14:15,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:15,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-15 02:14:15,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:15,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:15,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:14:15,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:15,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 02:14:15,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3096 backedges. 975 proven. 1950 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-15 02:14:15,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240171070] [2020-10-15 02:14:15,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:15,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-15 02:14:15,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750229313] [2020-10-15 02:14:15,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 02:14:15,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:15,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 02:14:15,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=216, Unknown=0, NotChecked=0, Total=342 [2020-10-15 02:14:15,965 INFO L87 Difference]: Start difference. First operand 195 states and 249 transitions. Second operand 19 states. [2020-10-15 02:14:16,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:16,466 INFO L93 Difference]: Finished difference Result 407 states and 535 transitions. [2020-10-15 02:14:16,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 02:14:16,467 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 188 [2020-10-15 02:14:16,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:16,470 INFO L225 Difference]: With dead ends: 407 [2020-10-15 02:14:16,470 INFO L226 Difference]: Without dead ends: 221 [2020-10-15 02:14:16,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=364, Invalid=692, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 02:14:16,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-15 02:14:16,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 207. [2020-10-15 02:14:16,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-15 02:14:16,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 264 transitions. [2020-10-15 02:14:16,485 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 264 transitions. Word has length 188 [2020-10-15 02:14:16,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:16,486 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 264 transitions. [2020-10-15 02:14:16,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 02:14:16,486 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 264 transitions. [2020-10-15 02:14:16,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-15 02:14:16,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:16,490 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 40, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:16,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 02:14:16,490 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:16,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:16,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1469275589, now seen corresponding path program 10 times [2020-10-15 02:14:16,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:16,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066164893] [2020-10-15 02:14:16,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:16,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:16,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:16,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:16,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:16,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:17,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:18,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:19,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:21,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:21,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-15 02:14:21,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 02:14:21,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 02:14:21,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:21,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:21,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-10-15 02:14:21,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:14:21,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-15 02:14:21,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:21,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:21,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:21,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:21,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:21,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:21,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:14:21,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:21,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:21,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:21,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:21,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:21,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:21,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:21,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:21,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:23,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:23,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 02:14:23,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:23,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1712 [2020-10-15 02:14:23,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:23,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:23,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:14:23,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:23,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 02:14:23,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:23,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-15 02:14:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:23,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:23,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:23,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:23,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 02:14:23,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:23,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-15 02:14:23,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:23,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:23,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:14:23,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:23,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 02:14:23,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:23,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-15 02:14:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:23,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:23,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:24,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:24,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 02:14:24,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:24,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-15 02:14:24,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:24,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:24,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:14:24,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:24,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 02:14:24,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:24,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3585 backedges. 1134 proven. 2268 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-15 02:14:24,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066164893] [2020-10-15 02:14:24,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:24,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-15 02:14:24,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771546033] [2020-10-15 02:14:24,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 02:14:24,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:24,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 02:14:24,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=238, Unknown=0, NotChecked=0, Total=380 [2020-10-15 02:14:24,107 INFO L87 Difference]: Start difference. First operand 207 states and 264 transitions. Second operand 20 states. [2020-10-15 02:14:24,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:24,638 INFO L93 Difference]: Finished difference Result 431 states and 565 transitions. [2020-10-15 02:14:24,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 02:14:24,639 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 200 [2020-10-15 02:14:24,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:24,642 INFO L225 Difference]: With dead ends: 431 [2020-10-15 02:14:24,642 INFO L226 Difference]: Without dead ends: 233 [2020-10-15 02:14:24,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=412, Invalid=778, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 02:14:24,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-15 02:14:24,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 219. [2020-10-15 02:14:24,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-15 02:14:24,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 279 transitions. [2020-10-15 02:14:24,658 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 279 transitions. Word has length 200 [2020-10-15 02:14:24,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:24,658 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 279 transitions. [2020-10-15 02:14:24,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 02:14:24,659 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 279 transitions. [2020-10-15 02:14:24,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-15 02:14:24,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:24,663 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 43, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:24,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 02:14:24,663 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:24,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:24,664 INFO L82 PathProgramCache]: Analyzing trace with hash -2029136032, now seen corresponding path program 11 times [2020-10-15 02:14:24,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:24,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19224816] [2020-10-15 02:14:24,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:24,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:24,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:24,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:24,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:27,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:27,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:27,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:29,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:29,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:29,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-15 02:14:29,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 02:14:29,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 02:14:29,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:29,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:29,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-15 02:14:29,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:14:29,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-15 02:14:29,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:29,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:29,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:29,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:29,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:29,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:29,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:14:29,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:29,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:29,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:29,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:29,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:29,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:29,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:29,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:29,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:31,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:31,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:14:31,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:31,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1925 [2020-10-15 02:14:31,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:31,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:31,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:14:31,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:31,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 02:14:31,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:31,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-15 02:14:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:31,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:32,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:32,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:32,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:14:32,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:32,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-15 02:14:32,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:32,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:32,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:14:32,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:32,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 02:14:32,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:32,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-15 02:14:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:32,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:32,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:32,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:32,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:14:32,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:32,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-15 02:14:32,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:32,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:32,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:14:32,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:32,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 02:14:32,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4110 backedges. 1305 proven. 2610 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-15 02:14:32,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19224816] [2020-10-15 02:14:32,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:32,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-15 02:14:32,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18039424] [2020-10-15 02:14:32,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-15 02:14:32,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:32,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-15 02:14:32,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=261, Unknown=0, NotChecked=0, Total=420 [2020-10-15 02:14:32,609 INFO L87 Difference]: Start difference. First operand 219 states and 279 transitions. Second operand 21 states. [2020-10-15 02:14:33,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:33,202 INFO L93 Difference]: Finished difference Result 455 states and 595 transitions. [2020-10-15 02:14:33,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 02:14:33,203 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 212 [2020-10-15 02:14:33,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:33,205 INFO L225 Difference]: With dead ends: 455 [2020-10-15 02:14:33,205 INFO L226 Difference]: Without dead ends: 245 [2020-10-15 02:14:33,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=463, Invalid=869, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 02:14:33,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-15 02:14:33,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 231. [2020-10-15 02:14:33,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-15 02:14:33,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 294 transitions. [2020-10-15 02:14:33,222 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 294 transitions. Word has length 212 [2020-10-15 02:14:33,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:33,222 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 294 transitions. [2020-10-15 02:14:33,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-15 02:14:33,223 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 294 transitions. [2020-10-15 02:14:33,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-15 02:14:33,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:33,227 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 46, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:33,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 02:14:33,227 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:33,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:33,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1009926021, now seen corresponding path program 12 times [2020-10-15 02:14:33,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:33,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881113639] [2020-10-15 02:14:33,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:33,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:33,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:33,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:33,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:33,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:34,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:36,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:38,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:38,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-15 02:14:38,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:14:38,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5141 [2020-10-15 02:14:38,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:38,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:38,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-15 02:14:38,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:14:38,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-15 02:14:38,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:38,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:38,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:38,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:38,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:38,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:38,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:14:38,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:38,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:38,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:38,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:38,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:38,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:40,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:40,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 02:14:40,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:40,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1958 [2020-10-15 02:14:40,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:40,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:40,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 02:14:40,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:40,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 02:14:40,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:40,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-15 02:14:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:40,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:40,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:41,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:41,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 02:14:41,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:41,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-15 02:14:41,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:41,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:41,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 02:14:41,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:41,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 02:14:41,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:41,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-15 02:14:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:41,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:41,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:41,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:41,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 02:14:41,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:41,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-15 02:14:41,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:41,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:41,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 02:14:41,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:41,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 02:14:41,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:41,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4671 backedges. 1488 proven. 2976 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-10-15 02:14:41,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881113639] [2020-10-15 02:14:41,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:41,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-15 02:14:41,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409890092] [2020-10-15 02:14:41,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-15 02:14:41,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:41,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-15 02:14:41,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2020-10-15 02:14:41,321 INFO L87 Difference]: Start difference. First operand 231 states and 294 transitions. Second operand 22 states. [2020-10-15 02:14:41,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:41,936 INFO L93 Difference]: Finished difference Result 479 states and 625 transitions. [2020-10-15 02:14:41,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 02:14:41,937 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 224 [2020-10-15 02:14:41,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:41,939 INFO L225 Difference]: With dead ends: 479 [2020-10-15 02:14:41,939 INFO L226 Difference]: Without dead ends: 257 [2020-10-15 02:14:41,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=517, Invalid=965, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 02:14:41,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-15 02:14:41,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 243. [2020-10-15 02:14:41,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-15 02:14:41,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 309 transitions. [2020-10-15 02:14:41,956 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 309 transitions. Word has length 224 [2020-10-15 02:14:41,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:41,957 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 309 transitions. [2020-10-15 02:14:41,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-15 02:14:41,957 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 309 transitions. [2020-10-15 02:14:41,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-15 02:14:41,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:41,960 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 49, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:41,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 02:14:41,961 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:41,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:41,961 INFO L82 PathProgramCache]: Analyzing trace with hash 588437782, now seen corresponding path program 13 times [2020-10-15 02:14:41,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:41,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191124960] [2020-10-15 02:14:41,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:41,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:42,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:42,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:42,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:44,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:44,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:45,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:45,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:46,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:46,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-15 02:14:46,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 02:14:46,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-15 02:14:46,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:46,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:46,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-15 02:14:46,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:14:46,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-15 02:14:46,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:47,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:47,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:47,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:47,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:47,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:47,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:14:47,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:47,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:47,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:47,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:47,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:47,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:47,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:47,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:47,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:49,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:49,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 02:14:49,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:49,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2333 [2020-10-15 02:14:49,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:49,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:49,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:14:49,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:49,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-15 02:14:49,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:49,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-15 02:14:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:49,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:50,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:50,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:50,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 02:14:50,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:50,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-10-15 02:14:50,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:50,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 02:14:50,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:50,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-15 02:14:50,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:14:51,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-15 02:14:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:51,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:51,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:51,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:51,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 02:14:51,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:51,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-15 02:14:51,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:51,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:51,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 02:14:51,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:51,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-15 02:14:51,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:14:52,027 INFO L134 CoverageAnalysis]: Checked inductivity of 5268 backedges. 567 proven. 4326 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2020-10-15 02:14:52,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191124960] [2020-10-15 02:14:52,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:52,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-15 02:14:52,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245960768] [2020-10-15 02:14:52,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-15 02:14:52,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:52,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-15 02:14:52,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=968, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 02:14:52,029 INFO L87 Difference]: Start difference. First operand 243 states and 309 transitions. Second operand 38 states. [2020-10-15 02:14:55,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:55,546 INFO L93 Difference]: Finished difference Result 825 states and 1075 transitions. [2020-10-15 02:14:55,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-10-15 02:14:55,546 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 236 [2020-10-15 02:14:55,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:55,552 INFO L225 Difference]: With dead ends: 825 [2020-10-15 02:14:55,552 INFO L226 Difference]: Without dead ends: 566 [2020-10-15 02:14:55,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2476 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2516, Invalid=7384, Unknown=0, NotChecked=0, Total=9900 [2020-10-15 02:14:55,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2020-10-15 02:14:55,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 419. [2020-10-15 02:14:55,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-10-15 02:14:55,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 534 transitions. [2020-10-15 02:14:55,586 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 534 transitions. Word has length 236 [2020-10-15 02:14:55,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:55,587 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 534 transitions. [2020-10-15 02:14:55,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-15 02:14:55,587 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 534 transitions. [2020-10-15 02:14:55,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-15 02:14:55,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:55,593 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 52, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:55,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 02:14:55,594 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:55,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:55,594 INFO L82 PathProgramCache]: Analyzing trace with hash -805510863, now seen corresponding path program 14 times [2020-10-15 02:14:55,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:55,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590519422] [2020-10-15 02:14:55,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:55,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:55,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:55,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:55,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:56,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:56,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:59,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:00,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:00,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:00,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-15 02:15:00,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 02:15:00,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 02:15:00,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:00,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:00,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-15 02:15:00,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:15:00,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-15 02:15:00,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:00,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:15:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:00,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:00,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:00,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:15:00,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:00,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:15:00,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:00,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:00,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:15:00,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:15:00,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:15:00,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:00,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:15:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:00,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:00,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:02,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:02,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 02:15:02,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:02,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1695 [2020-10-15 02:15:02,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:02,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:02,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:15:02,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:15:02,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-15 02:15:02,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:02,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-15 02:15:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:02,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:02,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:03,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:03,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 02:15:03,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:03,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-10-15 02:15:03,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:03,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 02:15:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 02:15:03,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:03,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-15 02:15:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:03,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:03,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:04,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:04,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 02:15:04,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:04,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-15 02:15:04,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:04,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:04,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 02:15:04,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:04,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 02:15:04,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:04,277 INFO L134 CoverageAnalysis]: Checked inductivity of 5901 backedges. 636 proven. 4780 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2020-10-15 02:15:04,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590519422] [2020-10-15 02:15:04,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:15:04,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-15 02:15:04,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820075886] [2020-10-15 02:15:04,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-15 02:15:04,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:15:04,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-15 02:15:04,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=949, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 02:15:04,279 INFO L87 Difference]: Start difference. First operand 419 states and 534 transitions. Second operand 35 states. [2020-10-15 02:15:07,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:15:07,660 INFO L93 Difference]: Finished difference Result 1197 states and 1569 transitions. [2020-10-15 02:15:07,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-15 02:15:07,661 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 248 [2020-10-15 02:15:07,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:15:07,667 INFO L225 Difference]: With dead ends: 1197 [2020-10-15 02:15:07,667 INFO L226 Difference]: Without dead ends: 771 [2020-10-15 02:15:07,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1850 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2106, Invalid=6084, Unknown=0, NotChecked=0, Total=8190 [2020-10-15 02:15:07,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2020-10-15 02:15:07,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 435. [2020-10-15 02:15:07,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-10-15 02:15:07,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 554 transitions. [2020-10-15 02:15:07,727 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 554 transitions. Word has length 248 [2020-10-15 02:15:07,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:15:07,728 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 554 transitions. [2020-10-15 02:15:07,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-15 02:15:07,728 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 554 transitions. [2020-10-15 02:15:07,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-15 02:15:07,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:15:07,735 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 55, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:15:07,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 02:15:07,735 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:15:07,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:15:07,735 INFO L82 PathProgramCache]: Analyzing trace with hash 2072746188, now seen corresponding path program 15 times [2020-10-15 02:15:07,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:15:07,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555954135] [2020-10-15 02:15:07,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:15:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:07,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:07,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:07,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:07,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:08,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:08,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:09,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:10,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:12,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:12,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-15 02:15:12,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 02:15:12,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5213 [2020-10-15 02:15:12,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:12,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:12,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-15 02:15:12,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:15:12,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-15 02:15:12,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:13,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:15:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:13,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:13,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:13,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:15:13,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:13,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:15:13,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:13,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:13,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:15:13,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:15:13,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:15:13,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:13,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:15:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:13,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:13,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:14,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:14,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 02:15:14,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:14,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1452 [2020-10-15 02:15:14,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:14,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:15:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:15:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-15 02:15:14,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:14,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-15 02:15:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:14,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:15,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:15,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:15,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 02:15:15,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:15,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 852 [2020-10-15 02:15:15,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:15,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:15,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 02:15:15,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:15,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-15 02:15:15,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:16,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-15 02:15:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:16,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:16,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:16,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:16,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 02:15:16,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:16,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-15 02:15:16,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:16,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:16,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 02:15:16,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:16,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-15 02:15:16,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:16,596 INFO L134 CoverageAnalysis]: Checked inductivity of 6570 backedges. 709 proven. 5250 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2020-10-15 02:15:16,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555954135] [2020-10-15 02:15:16,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:15:16,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-15 02:15:16,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988841069] [2020-10-15 02:15:16,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-15 02:15:16,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:15:16,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-15 02:15:16,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=739, Unknown=0, NotChecked=0, Total=992 [2020-10-15 02:15:16,598 INFO L87 Difference]: Start difference. First operand 435 states and 554 transitions. Second operand 32 states. [2020-10-15 02:15:19,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:15:19,165 INFO L93 Difference]: Finished difference Result 1189 states and 1560 transitions. [2020-10-15 02:15:19,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-15 02:15:19,167 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 260 [2020-10-15 02:15:19,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:15:19,172 INFO L225 Difference]: With dead ends: 1189 [2020-10-15 02:15:19,173 INFO L226 Difference]: Without dead ends: 756 [2020-10-15 02:15:19,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1855, Invalid=4787, Unknown=0, NotChecked=0, Total=6642 [2020-10-15 02:15:19,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-10-15 02:15:19,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 455. [2020-10-15 02:15:19,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-10-15 02:15:19,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 578 transitions. [2020-10-15 02:15:19,208 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 578 transitions. Word has length 260 [2020-10-15 02:15:19,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:15:19,208 INFO L479 AbstractCegarLoop]: Abstraction has 455 states and 578 transitions. [2020-10-15 02:15:19,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-15 02:15:19,208 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 578 transitions. [2020-10-15 02:15:19,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-15 02:15:19,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:15:19,213 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 58, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:15:19,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 02:15:19,214 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:15:19,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:15:19,214 INFO L82 PathProgramCache]: Analyzing trace with hash -862011417, now seen corresponding path program 16 times [2020-10-15 02:15:19,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:15:19,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177816554] [2020-10-15 02:15:19,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:15:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:19,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:19,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:20,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:21,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:22,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:23,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:24,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:24,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-15 02:15:24,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:15:24,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5641 [2020-10-15 02:15:24,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:24,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:24,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 100 [2020-10-15 02:15:24,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:15:24,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 261 [2020-10-15 02:15:24,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:24,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:15:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:24,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:24,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:24,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:15:24,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:24,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:15:24,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:24,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:24,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:15:24,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:15:24,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:15:24,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:24,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:15:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:24,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:25,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:28,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:29,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:29,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 02:15:29,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 02:15:29,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 02:15:29,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:29,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:29,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 60 [2020-10-15 02:15:29,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:15:29,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-15 02:15:29,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:33,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-15 02:15:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:33,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:33,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:34,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:37,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:37,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 02:15:37,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 02:15:37,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4494 [2020-10-15 02:15:37,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:37,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:37,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:15:37,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:15:37,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-15 02:15:37,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:37,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-15 02:15:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:37,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:38,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:38,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:39,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:39,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 02:15:39,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 02:15:39,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1300 [2020-10-15 02:15:39,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:39,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:39,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:15:39,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:39,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-15 02:15:39,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:40,124 INFO L134 CoverageAnalysis]: Checked inductivity of 7275 backedges. 2164 proven. 3680 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2020-10-15 02:15:40,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177816554] [2020-10-15 02:15:40,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:15:40,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2020-10-15 02:15:40,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799191463] [2020-10-15 02:15:40,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-10-15 02:15:40,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:15:40,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-10-15 02:15:40,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=680, Invalid=4576, Unknown=0, NotChecked=0, Total=5256 [2020-10-15 02:15:40,127 INFO L87 Difference]: Start difference. First operand 455 states and 578 transitions. Second operand 73 states. [2020-10-15 02:16:03,754 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2020-10-15 02:16:09,303 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-15 02:16:12,464 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-15 02:16:14,040 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-15 02:16:15,611 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-15 02:16:17,291 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-15 02:16:19,062 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-15 02:16:19,504 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-15 02:16:21,002 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-15 02:16:22,999 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-15 02:16:25,152 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-15 02:16:27,334 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-15 02:16:29,642 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-15 02:16:32,058 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-15 02:16:34,593 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-15 02:16:37,366 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-15 02:16:40,124 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-15 02:16:42,980 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2020-10-15 02:16:43,349 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2020-10-15 02:16:45,924 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-10-15 02:16:46,305 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2020-10-15 02:16:46,638 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-15 02:16:47,202 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-10-15 02:16:50,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:50,336 INFO L93 Difference]: Finished difference Result 12567 states and 16028 transitions. [2020-10-15 02:16:50,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 494 states. [2020-10-15 02:16:50,338 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 272 [2020-10-15 02:16:50,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:50,394 INFO L225 Difference]: With dead ends: 12567 [2020-10-15 02:16:50,394 INFO L226 Difference]: Without dead ends: 10583 [2020-10-15 02:16:50,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 560 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125925 ImplicationChecksByTransitivity, 66.1s TimeCoverageRelationStatistics Valid=38038, Invalid=277244, Unknown=0, NotChecked=0, Total=315282 [2020-10-15 02:16:50,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10583 states.