/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/eca-rers2012/Problem15_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:27:38,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:27:38,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:27:38,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:27:38,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:27:38,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:27:38,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:27:38,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:27:38,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:27:38,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:27:38,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:27:38,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:27:38,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:27:38,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:27:38,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:27:38,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:27:38,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:27:38,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:27:38,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:27:38,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:27:38,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:27:38,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:27:38,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:27:38,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:27:38,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:27:38,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:27:38,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:27:38,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:27:38,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:27:38,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:27:38,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:27:38,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:27:38,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:27:38,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:27:38,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:27:38,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:27:38,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:27:38,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:27:38,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:27:38,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:27:38,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:27:38,135 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 [2020-10-14 03:27:38,159 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:27:38,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:27:38,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:27:38,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:27:38,161 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:27:38,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:27:38,161 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:27:38,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:27:38,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:27:38,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:27:38,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:27:38,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:27:38,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:27:38,163 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:27:38,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:27:38,163 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:27:38,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:27:38,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:27:38,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:27:38,164 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:27:38,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:27:38,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:27:38,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:27:38,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:27:38,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:27:38,165 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:27:38,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:27:38,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:27:38,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:27:38,166 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:27:38,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:27:38,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:27:38,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:27:38,551 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:27:38,551 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:27:38,552 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label19.c [2020-10-14 03:27:38,624 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/702a2bb61/37c6ace0484d4d2296c8c4e61b19b461/FLAGe7ad35eda [2020-10-14 03:27:39,365 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:27:39,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label19.c [2020-10-14 03:27:39,400 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/702a2bb61/37c6ace0484d4d2296c8c4e61b19b461/FLAGe7ad35eda [2020-10-14 03:27:39,529 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/702a2bb61/37c6ace0484d4d2296c8c4e61b19b461 [2020-10-14 03:27:39,541 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:27:39,543 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:27:39,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:27:39,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:27:39,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:27:39,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:27:39" (1/1) ... [2020-10-14 03:27:39,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:39, skipping insertion in model container [2020-10-14 03:27:39,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:27:39" (1/1) ... [2020-10-14 03:27:39,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:27:39,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:27:40,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:27:40,694 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:27:41,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:27:41,081 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:27:41,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:41 WrapperNode [2020-10-14 03:27:41,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:27:41,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:27:41,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:27:41,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:27:41,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:41" (1/1) ... [2020-10-14 03:27:41,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:41" (1/1) ... [2020-10-14 03:27:41,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:41" (1/1) ... [2020-10-14 03:27:41,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:41" (1/1) ... [2020-10-14 03:27:41,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:41" (1/1) ... [2020-10-14 03:27:41,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:41" (1/1) ... [2020-10-14 03:27:41,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:41" (1/1) ... [2020-10-14 03:27:41,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:27:41,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:27:41,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:27:41,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:27:41,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:41" (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 [2020-10-14 03:27:41,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:27:41,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:27:41,381 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:27:41,381 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:27:41,381 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:27:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:27:41,382 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:27:41,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:27:41,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:27:41,382 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:27:41,383 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:27:41,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:27:41,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:27:46,831 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:27:46,832 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:27:46,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:27:46 BoogieIcfgContainer [2020-10-14 03:27:46,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:27:46,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:27:46,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:27:46,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:27:46,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:27:39" (1/3) ... [2020-10-14 03:27:46,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f233b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:27:46, skipping insertion in model container [2020-10-14 03:27:46,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:41" (2/3) ... [2020-10-14 03:27:46,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f233b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:27:46, skipping insertion in model container [2020-10-14 03:27:46,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:27:46" (3/3) ... [2020-10-14 03:27:46,848 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label19.c [2020-10-14 03:27:46,858 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:27:46,866 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:27:46,880 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:27:46,908 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:27:46,908 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:27:46,908 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:27:46,908 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:27:46,909 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:27:46,909 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:27:46,909 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:27:46,909 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:27:46,936 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:27:46,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 03:27:46,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:46,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:27:46,946 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:46,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:46,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1728507445, now seen corresponding path program 1 times [2020-10-14 03:27:46,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:46,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044133816] [2020-10-14 03:27:46,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:47,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:47,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:47,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 03:27:47,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:47,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-10-14 03:27:47,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:47,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:47,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:27:47,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:27:47,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 03:27:47,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:27:47,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:47,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:47,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:47,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:47,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:47,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 03:27:47,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:47,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:47,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:27:47,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 03:27:47,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:27:47,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044133816] [2020-10-14 03:27:47,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:27:47,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:27:47,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820877439] [2020-10-14 03:27:47,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:27:47,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:47,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:27:47,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:27:47,782 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 03:27:53,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:53,415 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-14 03:27:53,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:27:53,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-14 03:27:53,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:53,437 INFO L225 Difference]: With dead ends: 1199 [2020-10-14 03:27:53,437 INFO L226 Difference]: Without dead ends: 697 [2020-10-14 03:27:53,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:27:53,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-14 03:27:53,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-14 03:27:53,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-14 03:27:53,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-14 03:27:53,572 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 51 [2020-10-14 03:27:53,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:53,573 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-14 03:27:53,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:27:53,573 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-14 03:27:53,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 03:27:53,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:53,580 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:27:53,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:27:53,580 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:53,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:53,581 INFO L82 PathProgramCache]: Analyzing trace with hash 882457234, now seen corresponding path program 1 times [2020-10-14 03:27:53,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:53,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300833213] [2020-10-14 03:27:53,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:53,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:53,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:54,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:56,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:56,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 03:27:56,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:27:56,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2625 [2020-10-14 03:27:56,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:56,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:56,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:56,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:27:56,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 03:27:56,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:56,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:56,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:56,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:56,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:56,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:56,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 03:27:56,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:56,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:56,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:56,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:56,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:56,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:56,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:56,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:56,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:56,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:27:56,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:56,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 03:27:56,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:56,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:56,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:56,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:56,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:27:56,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:56,525 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:27:56,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300833213] [2020-10-14 03:27:56,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:56,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:27:56,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639891619] [2020-10-14 03:27:56,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:27:56,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:56,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:27:56,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:27:56,529 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 5 states. [2020-10-14 03:28:04,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:04,657 INFO L93 Difference]: Finished difference Result 1699 states and 2591 transitions. [2020-10-14 03:28:04,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:28:04,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-14 03:28:04,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:04,671 INFO L225 Difference]: With dead ends: 1699 [2020-10-14 03:28:04,671 INFO L226 Difference]: Without dead ends: 1014 [2020-10-14 03:28:04,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:28:04,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-10-14 03:28:04,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 1010. [2020-10-14 03:28:04,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1010 states. [2020-10-14 03:28:04,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1388 transitions. [2020-10-14 03:28:04,725 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1388 transitions. Word has length 120 [2020-10-14 03:28:04,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:04,726 INFO L479 AbstractCegarLoop]: Abstraction has 1010 states and 1388 transitions. [2020-10-14 03:28:04,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:28:04,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1388 transitions. [2020-10-14 03:28:04,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 03:28:04,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:04,730 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:28:04,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:28:04,730 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:04,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:04,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1774581127, now seen corresponding path program 1 times [2020-10-14 03:28:04,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:04,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117420220] [2020-10-14 03:28:04,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:04,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:04,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:05,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:05,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 03:28:05,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:28:05,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 818 [2020-10-14 03:28:05,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:05,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:05,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:05,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 03:28:05,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 03:28:05,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:05,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:05,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:05,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:05,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:05,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:05,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:28:05,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:05,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:05,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:28:05,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:05,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:28:05,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:28:05,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:28:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:05,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:05,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:05,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 03:28:05,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:05,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 03:28:05,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:05,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:05,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:05,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:05,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:28:05,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:05,900 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:28:05,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117420220] [2020-10-14 03:28:05,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:28:05,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:28:05,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976704292] [2020-10-14 03:28:05,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:28:05,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:05,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:28:05,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:28:05,904 INFO L87 Difference]: Start difference. First operand 1010 states and 1388 transitions. Second operand 5 states. [2020-10-14 03:28:11,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:11,824 INFO L93 Difference]: Finished difference Result 2958 states and 4108 transitions. [2020-10-14 03:28:11,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:28:11,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-10-14 03:28:11,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:11,836 INFO L225 Difference]: With dead ends: 2958 [2020-10-14 03:28:11,836 INFO L226 Difference]: Without dead ends: 1954 [2020-10-14 03:28:11,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:28:11,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-14 03:28:11,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1947. [2020-10-14 03:28:11,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1947 states. [2020-10-14 03:28:11,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1947 states to 1947 states and 2435 transitions. [2020-10-14 03:28:11,889 INFO L78 Accepts]: Start accepts. Automaton has 1947 states and 2435 transitions. Word has length 136 [2020-10-14 03:28:11,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:11,889 INFO L479 AbstractCegarLoop]: Abstraction has 1947 states and 2435 transitions. [2020-10-14 03:28:11,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:28:11,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1947 states and 2435 transitions. [2020-10-14 03:28:11,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 03:28:11,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:11,893 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:28:11,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:28:11,893 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:11,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:11,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1329965876, now seen corresponding path program 1 times [2020-10-14 03:28:11,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:11,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351525432] [2020-10-14 03:28:11,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:11,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:12,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:12,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 03:28:12,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:12,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-14 03:28:12,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:12,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:12,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:28:12,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:28:12,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 03:28:12,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:12,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:12,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:12,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:12,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:12,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:12,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:28:12,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:12,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:12,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:12,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:12,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:28:12,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:28:12,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:28:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:12,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:12,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:12,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 03:28:12,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:12,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 03:28:12,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:12,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:12,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:12,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:28:12,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 03:28:12,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:12,630 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:28:12,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351525432] [2020-10-14 03:28:12,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:28:12,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:28:12,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426916960] [2020-10-14 03:28:12,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:28:12,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:12,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:28:12,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:28:12,635 INFO L87 Difference]: Start difference. First operand 1947 states and 2435 transitions. Second operand 7 states. [2020-10-14 03:28:18,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:18,654 INFO L93 Difference]: Finished difference Result 4879 states and 6317 transitions. [2020-10-14 03:28:18,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:28:18,655 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-10-14 03:28:18,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:18,673 INFO L225 Difference]: With dead ends: 4879 [2020-10-14 03:28:18,673 INFO L226 Difference]: Without dead ends: 2938 [2020-10-14 03:28:18,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:28:18,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-10-14 03:28:18,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2918. [2020-10-14 03:28:18,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2918 states. [2020-10-14 03:28:18,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2918 states to 2918 states and 3537 transitions. [2020-10-14 03:28:18,750 INFO L78 Accepts]: Start accepts. Automaton has 2918 states and 3537 transitions. Word has length 142 [2020-10-14 03:28:18,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:18,750 INFO L479 AbstractCegarLoop]: Abstraction has 2918 states and 3537 transitions. [2020-10-14 03:28:18,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:28:18,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2918 states and 3537 transitions. [2020-10-14 03:28:18,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-14 03:28:18,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:18,754 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:28:18,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:28:18,755 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:18,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:18,755 INFO L82 PathProgramCache]: Analyzing trace with hash -2052919016, now seen corresponding path program 1 times [2020-10-14 03:28:18,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:18,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430479537] [2020-10-14 03:28:18,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:18,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:18,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:19,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:19,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:20,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:22,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:22,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-14 03:28:22,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:28:22,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3453 [2020-10-14 03:28:22,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:22,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:22,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:22,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:28:22,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 03:28:22,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:22,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:22,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:22,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:22,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:22,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:22,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:28:22,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:22,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:22,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:28:22,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:22,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:28:22,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:22,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:28:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:22,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:22,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:22,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:28:22,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:22,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 03:28:22,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:22,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:22,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:22,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:22,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:28:22,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:22,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:28:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:22,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:22,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:22,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 03:28:22,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:22,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 03:28:22,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:22,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:22,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:22,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:28:22,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 03:28:22,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:28:22,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430479537] [2020-10-14 03:28:22,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:28:22,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:28:22,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952715069] [2020-10-14 03:28:22,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:28:22,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:22,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:28:22,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:28:22,685 INFO L87 Difference]: Start difference. First operand 2918 states and 3537 transitions. Second operand 7 states. [2020-10-14 03:28:30,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:30,538 INFO L93 Difference]: Finished difference Result 8102 states and 10101 transitions. [2020-10-14 03:28:30,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:28:30,543 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 218 [2020-10-14 03:28:30,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:30,564 INFO L225 Difference]: With dead ends: 8102 [2020-10-14 03:28:30,565 INFO L226 Difference]: Without dead ends: 4234 [2020-10-14 03:28:30,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:28:30,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4234 states. [2020-10-14 03:28:30,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4234 to 3876. [2020-10-14 03:28:30,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3876 states. [2020-10-14 03:28:30,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3876 states to 3876 states and 4362 transitions. [2020-10-14 03:28:30,678 INFO L78 Accepts]: Start accepts. Automaton has 3876 states and 4362 transitions. Word has length 218 [2020-10-14 03:28:30,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:30,679 INFO L479 AbstractCegarLoop]: Abstraction has 3876 states and 4362 transitions. [2020-10-14 03:28:30,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:28:30,679 INFO L276 IsEmpty]: Start isEmpty. Operand 3876 states and 4362 transitions. [2020-10-14 03:28:30,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-14 03:28:30,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:30,685 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:28:30,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:28:30,685 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:30,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:30,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1544909855, now seen corresponding path program 1 times [2020-10-14 03:28:30,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:30,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717156907] [2020-10-14 03:28:30,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:30,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:31,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:32,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:32,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-14 03:28:32,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:28:32,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1743 [2020-10-14 03:28:32,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:32,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:32,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 03:28:32,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:28:32,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 292 [2020-10-14 03:28:32,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:28:32,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:32,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:32,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:32,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:32,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:32,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:28:32,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:32,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:32,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:32,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:32,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:28:32,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:28:32,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:28:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:32,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:33,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:33,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 03:28:33,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:33,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-10-14 03:28:33,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:33,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:33,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:28:33,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:28:33,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-14 03:28:33,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:33,676 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:28:33,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717156907] [2020-10-14 03:28:33,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:28:33,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:28:33,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439140585] [2020-10-14 03:28:33,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:28:33,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:33,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:28:33,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:28:33,679 INFO L87 Difference]: Start difference. First operand 3876 states and 4362 transitions. Second operand 8 states. [2020-10-14 03:28:41,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:41,527 INFO L93 Difference]: Finished difference Result 9986 states and 11161 transitions. [2020-10-14 03:28:41,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:28:41,528 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 288 [2020-10-14 03:28:41,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:41,550 INFO L225 Difference]: With dead ends: 9986 [2020-10-14 03:28:41,550 INFO L226 Difference]: Without dead ends: 5807 [2020-10-14 03:28:41,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:28:41,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5807 states. [2020-10-14 03:28:41,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5807 to 5770. [2020-10-14 03:28:41,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5770 states. [2020-10-14 03:28:41,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5770 states to 5770 states and 6409 transitions. [2020-10-14 03:28:41,676 INFO L78 Accepts]: Start accepts. Automaton has 5770 states and 6409 transitions. Word has length 288 [2020-10-14 03:28:41,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:41,677 INFO L479 AbstractCegarLoop]: Abstraction has 5770 states and 6409 transitions. [2020-10-14 03:28:41,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:28:41,677 INFO L276 IsEmpty]: Start isEmpty. Operand 5770 states and 6409 transitions. [2020-10-14 03:28:41,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-14 03:28:41,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:41,684 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:28:41,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:28:41,684 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:41,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:41,685 INFO L82 PathProgramCache]: Analyzing trace with hash -2081445143, now seen corresponding path program 1 times [2020-10-14 03:28:41,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:41,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433282006] [2020-10-14 03:28:41,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:41,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:41,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:44,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:44,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:44,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:44,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-14 03:28:44,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:28:44,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2898 [2020-10-14 03:28:44,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:44,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:44,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:44,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:28:44,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 03:28:44,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:44,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:44,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:44,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:44,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:44,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:44,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:28:44,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:44,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:44,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:28:44,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:44,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:28:44,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:28:44,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:28:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:44,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:44,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:44,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:28:44,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:44,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 03:28:44,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:44,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:44,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:44,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:44,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:28:44,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:28:45,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:28:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:45,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:45,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:45,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 03:28:45,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:45,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 03:28:45,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:45,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:28:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 03:28:45,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:28:45,317 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:28:45,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433282006] [2020-10-14 03:28:45,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:28:45,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:28:45,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603745157] [2020-10-14 03:28:45,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:28:45,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:45,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:28:45,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:28:45,320 INFO L87 Difference]: Start difference. First operand 5770 states and 6409 transitions. Second operand 7 states. [2020-10-14 03:28:52,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:52,114 INFO L93 Difference]: Finished difference Result 15969 states and 18094 transitions. [2020-10-14 03:28:52,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:28:52,117 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 342 [2020-10-14 03:28:52,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:52,170 INFO L225 Difference]: With dead ends: 15969 [2020-10-14 03:28:52,171 INFO L226 Difference]: Without dead ends: 10512 [2020-10-14 03:28:52,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:28:52,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10512 states. [2020-10-14 03:28:52,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10512 to 8315. [2020-10-14 03:28:52,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8315 states. [2020-10-14 03:28:52,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8315 states to 8315 states and 9537 transitions. [2020-10-14 03:28:52,437 INFO L78 Accepts]: Start accepts. Automaton has 8315 states and 9537 transitions. Word has length 342 [2020-10-14 03:28:52,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:52,438 INFO L479 AbstractCegarLoop]: Abstraction has 8315 states and 9537 transitions. [2020-10-14 03:28:52,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:28:52,438 INFO L276 IsEmpty]: Start isEmpty. Operand 8315 states and 9537 transitions. [2020-10-14 03:28:52,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-14 03:28:52,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:52,449 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:28:52,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:28:52,450 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:52,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:52,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1311910888, now seen corresponding path program 1 times [2020-10-14 03:28:52,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:52,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033069021] [2020-10-14 03:28:52,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:52,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:53,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:53,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:54,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:54,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 366 [2020-10-14 03:28:54,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:28:54,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1770 [2020-10-14 03:28:54,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:54,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:54,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:28:54,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:28:54,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 03:28:54,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:28:54,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:54,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:54,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:54,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:54,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:54,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:28:54,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:54,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:54,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:54,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:54,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:28:54,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:28:54,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:28:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:54,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:54,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:54,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:28:54,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:54,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-14 03:28:54,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:54,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:54,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:54,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:28:54,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 03:28:54,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:54,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:28:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:54,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:54,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:54,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 03:28:54,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:54,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 03:28:54,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:54,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:54,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:28:54,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-14 03:28:54,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:28:54,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:28:55,026 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 88 proven. 98 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 03:28:55,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033069021] [2020-10-14 03:28:55,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:28:55,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:28:55,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355589554] [2020-10-14 03:28:55,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:28:55,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:55,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:28:55,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:28:55,028 INFO L87 Difference]: Start difference. First operand 8315 states and 9537 transitions. Second operand 8 states. [2020-10-14 03:29:04,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:29:04,578 INFO L93 Difference]: Finished difference Result 16347 states and 18821 transitions. [2020-10-14 03:29:04,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 03:29:04,585 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 354 [2020-10-14 03:29:04,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:29:04,606 INFO L225 Difference]: With dead ends: 16347 [2020-10-14 03:29:04,606 INFO L226 Difference]: Without dead ends: 8345 [2020-10-14 03:29:04,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:29:04,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8345 states. [2020-10-14 03:29:04,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8345 to 8331. [2020-10-14 03:29:04,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8331 states. [2020-10-14 03:29:04,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8331 states to 8331 states and 9573 transitions. [2020-10-14 03:29:04,778 INFO L78 Accepts]: Start accepts. Automaton has 8331 states and 9573 transitions. Word has length 354 [2020-10-14 03:29:04,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:29:04,778 INFO L479 AbstractCegarLoop]: Abstraction has 8331 states and 9573 transitions. [2020-10-14 03:29:04,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:29:04,779 INFO L276 IsEmpty]: Start isEmpty. Operand 8331 states and 9573 transitions. [2020-10-14 03:29:04,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-10-14 03:29:04,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:29:04,789 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:29:04,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:29:04,789 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:29:04,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:29:04,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1088812881, now seen corresponding path program 1 times [2020-10-14 03:29:04,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:29:04,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171455488] [2020-10-14 03:29:04,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:29:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:04,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:05,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:07,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:07,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 448 [2020-10-14 03:29:07,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:29:07,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2208 [2020-10-14 03:29:07,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:07,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:07,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:07,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 03:29:07,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:29:07,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:07,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:29:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:07,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:07,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:07,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:29:07,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:07,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:29:07,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:07,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:07,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:07,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:07,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:07,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:07,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:29:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:07,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:07,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:07,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:29:07,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:07,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 03:29:07,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:07,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:07,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:07,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:07,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 03:29:07,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:07,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:29:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:07,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:07,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:07,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:29:07,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:07,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 03:29:07,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:07,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:07,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:07,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:29:07,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:29:07,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:08,140 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:29:08,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171455488] [2020-10-14 03:29:08,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:29:08,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:29:08,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637993552] [2020-10-14 03:29:08,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:29:08,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:29:08,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:29:08,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:29:08,143 INFO L87 Difference]: Start difference. First operand 8331 states and 9573 transitions. Second operand 7 states. [2020-10-14 03:29:17,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:29:17,797 INFO L93 Difference]: Finished difference Result 17616 states and 20195 transitions. [2020-10-14 03:29:17,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 03:29:17,798 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 436 [2020-10-14 03:29:17,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:29:17,823 INFO L225 Difference]: With dead ends: 17616 [2020-10-14 03:29:17,823 INFO L226 Difference]: Without dead ends: 9598 [2020-10-14 03:29:17,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:29:17,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9598 states. [2020-10-14 03:29:17,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9598 to 9576. [2020-10-14 03:29:17,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9576 states. [2020-10-14 03:29:17,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9576 states to 9576 states and 10866 transitions. [2020-10-14 03:29:17,994 INFO L78 Accepts]: Start accepts. Automaton has 9576 states and 10866 transitions. Word has length 436 [2020-10-14 03:29:17,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:29:17,995 INFO L479 AbstractCegarLoop]: Abstraction has 9576 states and 10866 transitions. [2020-10-14 03:29:17,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:29:17,996 INFO L276 IsEmpty]: Start isEmpty. Operand 9576 states and 10866 transitions. [2020-10-14 03:29:18,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2020-10-14 03:29:18,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:29:18,005 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:29:18,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:29:18,006 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:29:18,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:29:18,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1007660407, now seen corresponding path program 1 times [2020-10-14 03:29:18,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:29:18,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251516226] [2020-10-14 03:29:18,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:29:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:18,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:18,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:18,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 460 [2020-10-14 03:29:18,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:18,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 638 [2020-10-14 03:29:18,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:18,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:18,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 03:29:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 03:29:18,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:18,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:29:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:18,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:18,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:18,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:29:18,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:18,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:29:18,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:18,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:18,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:18,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:18,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:29:18,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:29:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:18,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:18,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:18,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:29:18,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:18,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 03:29:18,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:18,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:18,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:18,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:18,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:18,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:19,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:29:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:19,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:19,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:19,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:29:19,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:19,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 03:29:19,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:19,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:19,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:19,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:19,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:29:19,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:19,223 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-14 03:29:19,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251516226] [2020-10-14 03:29:19,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:29:19,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:29:19,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516554094] [2020-10-14 03:29:19,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:29:19,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:29:19,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:29:19,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:29:19,226 INFO L87 Difference]: Start difference. First operand 9576 states and 10866 transitions. Second operand 5 states. [2020-10-14 03:29:26,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:29:26,277 INFO L93 Difference]: Finished difference Result 22248 states and 25865 transitions. [2020-10-14 03:29:26,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:29:26,284 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 448 [2020-10-14 03:29:26,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:29:26,321 INFO L225 Difference]: With dead ends: 22248 [2020-10-14 03:29:26,321 INFO L226 Difference]: Without dead ends: 12985 [2020-10-14 03:29:26,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:29:26,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12985 states. [2020-10-14 03:29:26,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12985 to 12674. [2020-10-14 03:29:26,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12674 states. [2020-10-14 03:29:26,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12674 states to 12674 states and 14274 transitions. [2020-10-14 03:29:26,620 INFO L78 Accepts]: Start accepts. Automaton has 12674 states and 14274 transitions. Word has length 448 [2020-10-14 03:29:26,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:29:26,622 INFO L479 AbstractCegarLoop]: Abstraction has 12674 states and 14274 transitions. [2020-10-14 03:29:26,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:29:26,622 INFO L276 IsEmpty]: Start isEmpty. Operand 12674 states and 14274 transitions. [2020-10-14 03:29:26,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2020-10-14 03:29:26,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:29:26,636 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:29:26,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:29:26,637 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:29:26,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:29:26,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1753482893, now seen corresponding path program 1 times [2020-10-14 03:29:26,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:29:26,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876434876] [2020-10-14 03:29:26,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:29:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:26,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:28,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:29,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:29,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 496 [2020-10-14 03:29:29,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:29:29,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2295 [2020-10-14 03:29:29,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:29,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:29,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 03:29:29,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:29:29,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 490 [2020-10-14 03:29:29,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:29,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:29:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:29,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:29,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:29,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:29:29,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:29,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:29:29,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:29,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:29,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:29,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:29,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:29:29,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:29,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:29:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:29,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:29,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:29,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:29:29,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:29,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-14 03:29:29,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:29,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:29,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:29,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:29:29,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-14 03:29:29,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:29,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:29:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:29,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:29,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:29,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 03:29:29,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:29,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-14 03:29:29,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:29,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:29,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:29:29,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:29:29,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-14 03:29:29,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:30,102 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 03:29:30,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876434876] [2020-10-14 03:29:30,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:29:30,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:29:30,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779708227] [2020-10-14 03:29:30,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:29:30,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:29:30,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:29:30,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:29:30,105 INFO L87 Difference]: Start difference. First operand 12674 states and 14274 transitions. Second operand 8 states. [2020-10-14 03:29:39,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:29:39,169 INFO L93 Difference]: Finished difference Result 23834 states and 26924 transitions. [2020-10-14 03:29:39,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:29:39,171 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 484 [2020-10-14 03:29:39,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:29:39,219 INFO L225 Difference]: With dead ends: 23834 [2020-10-14 03:29:39,220 INFO L226 Difference]: Without dead ends: 14273 [2020-10-14 03:29:39,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:29:39,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14273 states. [2020-10-14 03:29:39,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14273 to 12704. [2020-10-14 03:29:39,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12704 states. [2020-10-14 03:29:39,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12704 states to 12704 states and 14281 transitions. [2020-10-14 03:29:39,456 INFO L78 Accepts]: Start accepts. Automaton has 12704 states and 14281 transitions. Word has length 484 [2020-10-14 03:29:39,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:29:39,457 INFO L479 AbstractCegarLoop]: Abstraction has 12704 states and 14281 transitions. [2020-10-14 03:29:39,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:29:39,457 INFO L276 IsEmpty]: Start isEmpty. Operand 12704 states and 14281 transitions. [2020-10-14 03:29:39,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2020-10-14 03:29:39,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:29:39,464 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:29:39,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:29:39,464 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:29:39,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:29:39,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1013240758, now seen corresponding path program 1 times [2020-10-14 03:29:39,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:29:39,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94880533] [2020-10-14 03:29:39,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:29:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:39,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:40,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:41,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:41,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-14 03:29:41,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:29:41,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1499 [2020-10-14 03:29:41,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:41,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:41,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:41,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 03:29:41,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 03:29:41,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:41,328 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-10-14 03:29:41,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:29:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:41,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:41,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:41,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:29:41,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:41,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:29:41,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:41,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:41,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:41,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:41,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:41,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:41,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:29:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:41,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:41,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:41,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:29:41,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:41,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 03:29:41,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:41,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:41,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:41,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:41,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:41,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:41,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:29:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:41,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:41,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:41,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:29:41,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:41,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 03:29:41,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:41,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:41,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:41,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:41,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:29:41,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:41,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 03:29:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:41,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:41,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:41,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 03:29:41,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:41,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 03:29:41,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:41,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:41,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:41,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:29:41,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 03:29:41,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:41,859 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 313 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 03:29:41,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94880533] [2020-10-14 03:29:41,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:29:41,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:29:41,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858432568] [2020-10-14 03:29:41,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:29:41,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:29:41,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:29:41,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:29:41,861 INFO L87 Difference]: Start difference. First operand 12704 states and 14281 transitions. Second operand 7 states. [2020-10-14 03:29:53,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:29:53,519 INFO L93 Difference]: Finished difference Result 27896 states and 32094 transitions. [2020-10-14 03:29:53,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:29:53,520 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 539 [2020-10-14 03:29:53,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:29:53,564 INFO L225 Difference]: With dead ends: 27896 [2020-10-14 03:29:53,565 INFO L226 Difference]: Without dead ends: 16442 [2020-10-14 03:29:53,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:29:53,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16442 states. [2020-10-14 03:29:53,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16442 to 15196. [2020-10-14 03:29:53,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15196 states. [2020-10-14 03:29:53,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15196 states to 15196 states and 17135 transitions. [2020-10-14 03:29:53,835 INFO L78 Accepts]: Start accepts. Automaton has 15196 states and 17135 transitions. Word has length 539 [2020-10-14 03:29:53,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:29:53,836 INFO L479 AbstractCegarLoop]: Abstraction has 15196 states and 17135 transitions. [2020-10-14 03:29:53,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:29:53,836 INFO L276 IsEmpty]: Start isEmpty. Operand 15196 states and 17135 transitions. [2020-10-14 03:29:53,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2020-10-14 03:29:53,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:29:53,845 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:29:53,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:29:53,846 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:29:53,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:29:53,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1940570830, now seen corresponding path program 1 times [2020-10-14 03:29:53,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:29:53,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326216788] [2020-10-14 03:29:53,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:29:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:54,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:54,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:54,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:56,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:56,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 590 [2020-10-14 03:29:56,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:29:56,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2816 [2020-10-14 03:29:56,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:56,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:56,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:56,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 03:29:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 03:29:56,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:56,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:29:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:56,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:56,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:56,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:29:56,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:56,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:29:56,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:56,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:56,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:56,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:56,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:56,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:57,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:29:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:57,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:57,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:57,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:29:57,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:57,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 03:29:57,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:57,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:57,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:57,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:57,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:57,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:57,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:29:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:57,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:57,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:57,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:29:57,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:57,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 03:29:57,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:57,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:57,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:57,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:57,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:29:57,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:57,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 03:29:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:57,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:57,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:57,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 03:29:57,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:57,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 03:29:57,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:57,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:57,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:57,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:29:57,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 03:29:57,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 370 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 03:29:58,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326216788] [2020-10-14 03:29:58,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:29:58,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:29:58,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284438907] [2020-10-14 03:29:58,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:29:58,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:29:58,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:29:58,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:29:58,011 INFO L87 Difference]: Start difference. First operand 15196 states and 17135 transitions. Second operand 7 states. [2020-10-14 03:30:04,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:30:04,562 INFO L93 Difference]: Finished difference Result 32527 states and 37503 transitions. [2020-10-14 03:30:04,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:30:04,565 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 576 [2020-10-14 03:30:04,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:30:04,617 INFO L225 Difference]: With dead ends: 32527 [2020-10-14 03:30:04,617 INFO L226 Difference]: Without dead ends: 19518 [2020-10-14 03:30:04,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:30:04,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19518 states. [2020-10-14 03:30:05,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19518 to 18278. [2020-10-14 03:30:05,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18278 states. [2020-10-14 03:30:05,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18278 states to 18278 states and 20889 transitions. [2020-10-14 03:30:05,094 INFO L78 Accepts]: Start accepts. Automaton has 18278 states and 20889 transitions. Word has length 576 [2020-10-14 03:30:05,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:30:05,095 INFO L479 AbstractCegarLoop]: Abstraction has 18278 states and 20889 transitions. [2020-10-14 03:30:05,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:30:05,096 INFO L276 IsEmpty]: Start isEmpty. Operand 18278 states and 20889 transitions. [2020-10-14 03:30:05,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2020-10-14 03:30:05,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:30:05,107 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:30:05,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 03:30:05,107 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:30:05,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:30:05,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1966870406, now seen corresponding path program 1 times [2020-10-14 03:30:05,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:30:05,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523071783] [2020-10-14 03:30:05,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:30:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:05,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:05,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:07,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:08,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:08,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 627 [2020-10-14 03:30:08,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:30:08,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3713 [2020-10-14 03:30:08,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:08,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:08,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:08,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 576 [2020-10-14 03:30:08,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 03:30:08,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:09,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:30:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:09,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:09,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:09,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:30:09,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:09,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:30:09,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:09,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:09,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:09,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:09,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:09,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:09,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:30:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:09,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:09,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:09,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:30:09,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:09,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 03:30:09,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:09,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:09,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:09,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:09,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:09,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:09,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:30:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:09,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:09,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:09,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:30:09,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:09,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 03:30:09,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:09,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:09,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:09,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:09,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:09,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:09,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 03:30:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:09,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:09,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:09,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 03:30:09,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:09,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 03:30:09,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:09,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:09,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:30:09,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:09,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 03:30:09,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:09,647 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 135 proven. 3 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2020-10-14 03:30:09,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523071783] [2020-10-14 03:30:09,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:30:09,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:30:09,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457409307] [2020-10-14 03:30:09,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:30:09,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:30:09,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:30:09,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:30:09,649 INFO L87 Difference]: Start difference. First operand 18278 states and 20889 transitions. Second operand 5 states. [2020-10-14 03:30:16,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:30:16,494 INFO L93 Difference]: Finished difference Result 36859 states and 42192 transitions. [2020-10-14 03:30:16,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:30:16,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 613 [2020-10-14 03:30:16,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:30:16,545 INFO L225 Difference]: With dead ends: 36859 [2020-10-14 03:30:16,545 INFO L226 Difference]: Without dead ends: 18577 [2020-10-14 03:30:16,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:30:16,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18577 states. [2020-10-14 03:30:17,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18577 to 18268. [2020-10-14 03:30:17,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18268 states. [2020-10-14 03:30:17,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18268 states to 18268 states and 19892 transitions. [2020-10-14 03:30:17,036 INFO L78 Accepts]: Start accepts. Automaton has 18268 states and 19892 transitions. Word has length 613 [2020-10-14 03:30:17,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:30:17,037 INFO L479 AbstractCegarLoop]: Abstraction has 18268 states and 19892 transitions. [2020-10-14 03:30:17,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:30:17,037 INFO L276 IsEmpty]: Start isEmpty. Operand 18268 states and 19892 transitions. [2020-10-14 03:30:17,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2020-10-14 03:30:17,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:30:17,053 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:30:17,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 03:30:17,053 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:30:17,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:30:17,054 INFO L82 PathProgramCache]: Analyzing trace with hash -702110418, now seen corresponding path program 1 times [2020-10-14 03:30:17,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:30:17,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320792783] [2020-10-14 03:30:17,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:30:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:17,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:17,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:18,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:21,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:21,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 704 [2020-10-14 03:30:21,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:30:21,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4748 [2020-10-14 03:30:21,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:21,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:21,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:21,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 560 [2020-10-14 03:30:21,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 03:30:21,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:22,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:30:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:22,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:22,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:22,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:30:22,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:22,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:30:22,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:22,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:22,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:22,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:22,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:22,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:22,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:30:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:22,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:22,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:22,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:30:22,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:22,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 03:30:22,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:22,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:22,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:22,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:22,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:22,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:22,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:30:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:22,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:22,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:22,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:30:22,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:22,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 03:30:22,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:22,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:22,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:22,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:22,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:22,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:22,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 03:30:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:22,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:22,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:22,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 03:30:22,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:22,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 03:30:22,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:22,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:22,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:30:22,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:22,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 03:30:22,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:22,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-10-14 03:30:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:22,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:22,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:22,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 03:30:22,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:22,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 03:30:22,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:22,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:22,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:22,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:30:22,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 03:30:22,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:22,743 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 450 proven. 2 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2020-10-14 03:30:22,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320792783] [2020-10-14 03:30:22,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:30:22,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:30:22,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183045746] [2020-10-14 03:30:22,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:30:22,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:30:22,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:30:22,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:30:22,745 INFO L87 Difference]: Start difference. First operand 18268 states and 19892 transitions. Second operand 7 states. [2020-10-14 03:30:30,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:30:30,189 INFO L93 Difference]: Finished difference Result 40634 states and 44896 transitions. [2020-10-14 03:30:30,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:30:30,191 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 688 [2020-10-14 03:30:30,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:30:30,256 INFO L225 Difference]: With dead ends: 40634 [2020-10-14 03:30:30,257 INFO L226 Difference]: Without dead ends: 22664 [2020-10-14 03:30:30,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:30:30,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22664 states. [2020-10-14 03:30:30,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22664 to 22000. [2020-10-14 03:30:30,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22000 states. [2020-10-14 03:30:30,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22000 states to 22000 states and 24018 transitions. [2020-10-14 03:30:30,693 INFO L78 Accepts]: Start accepts. Automaton has 22000 states and 24018 transitions. Word has length 688 [2020-10-14 03:30:30,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:30:30,695 INFO L479 AbstractCegarLoop]: Abstraction has 22000 states and 24018 transitions. [2020-10-14 03:30:30,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:30:30,695 INFO L276 IsEmpty]: Start isEmpty. Operand 22000 states and 24018 transitions. [2020-10-14 03:30:30,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2020-10-14 03:30:30,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:30:30,715 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:30:30,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 03:30:30,716 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:30:30,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:30:30,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1407213499, now seen corresponding path program 1 times [2020-10-14 03:30:30,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:30:30,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374101489] [2020-10-14 03:30:30,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:30:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:31,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:31,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:33,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:35,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:35,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 704 [2020-10-14 03:30:35,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:30:35,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4211 [2020-10-14 03:30:35,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:35,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:35,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:35,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-14 03:30:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:30:35,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:35,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:30:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:35,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:35,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:35,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:30:35,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:35,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:30:35,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:35,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:35,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:35,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:35,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:35,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:35,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:30:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:35,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:35,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:35,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:30:35,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:35,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 03:30:35,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:35,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:35,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:35,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:30:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:35,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:35,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:35,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 03:30:35,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:35,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-14 03:30:35,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:35,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:35,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:30:35,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:35,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-14 03:30:35,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:35,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-14 03:30:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:35,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:36,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:36,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:30:36,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:36,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 03:30:36,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:36,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:36,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:36,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:30:36,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:30:36,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:30:36,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-10-14 03:30:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:36,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:36,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:36,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 03:30:36,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:36,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 03:30:36,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:36,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:36,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:36,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-14 03:30:36,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:36,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:36,515 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 343 proven. 77 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2020-10-14 03:30:36,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374101489] [2020-10-14 03:30:36,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:30:36,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:30:36,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021034293] [2020-10-14 03:30:36,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:30:36,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:30:36,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:30:36,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:30:36,518 INFO L87 Difference]: Start difference. First operand 22000 states and 24018 transitions. Second operand 7 states. [2020-10-14 03:30:45,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:30:45,589 INFO L93 Difference]: Finished difference Result 50203 states and 54927 transitions. [2020-10-14 03:30:45,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:30:45,591 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 688 [2020-10-14 03:30:45,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:30:45,665 INFO L225 Difference]: With dead ends: 50203 [2020-10-14 03:30:45,666 INFO L226 Difference]: Without dead ends: 28827 [2020-10-14 03:30:45,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:30:45,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28827 states. [2020-10-14 03:30:46,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28827 to 26959. [2020-10-14 03:30:46,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26959 states. [2020-10-14 03:30:46,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26959 states to 26959 states and 29166 transitions. [2020-10-14 03:30:46,173 INFO L78 Accepts]: Start accepts. Automaton has 26959 states and 29166 transitions. Word has length 688 [2020-10-14 03:30:46,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:30:46,174 INFO L479 AbstractCegarLoop]: Abstraction has 26959 states and 29166 transitions. [2020-10-14 03:30:46,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:30:46,174 INFO L276 IsEmpty]: Start isEmpty. Operand 26959 states and 29166 transitions. [2020-10-14 03:30:46,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2020-10-14 03:30:46,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:30:46,191 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:30:46,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 03:30:46,191 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:30:46,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:30:46,192 INFO L82 PathProgramCache]: Analyzing trace with hash -718502289, now seen corresponding path program 1 times [2020-10-14 03:30:46,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:30:46,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52892491] [2020-10-14 03:30:46,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:30:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:46,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:46,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:48,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:49,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:49,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 716 [2020-10-14 03:30:49,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:30:49,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2901 [2020-10-14 03:30:49,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:49,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:49,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:49,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 585 [2020-10-14 03:30:49,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:30:49,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:49,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:30:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:49,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:49,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:49,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:30:49,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:49,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:30:49,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:49,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:49,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:49,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:49,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:49,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:49,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:30:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:49,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:49,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:49,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:30:49,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:49,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 03:30:49,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:49,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:49,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:49,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:49,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:49,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:49,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:30:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:49,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:49,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:49,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:30:49,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:49,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 03:30:49,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:49,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:49,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:49,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:49,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:49,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:49,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 03:30:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:49,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:49,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:49,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 03:30:49,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:49,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 03:30:49,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:49,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:30:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-14 03:30:49,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:49,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-14 03:30:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:49,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:50,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:50,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 03:30:50,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:50,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 03:30:50,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:50,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:50,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:50,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:30:50,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 03:30:50,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:50,259 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2020-10-14 03:30:50,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52892491] [2020-10-14 03:30:50,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:30:50,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:30:50,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816536716] [2020-10-14 03:30:50,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:30:50,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:30:50,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:30:50,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:30:50,262 INFO L87 Difference]: Start difference. First operand 26959 states and 29166 transitions. Second operand 7 states. [2020-10-14 03:31:00,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:31:00,690 INFO L93 Difference]: Finished difference Result 57959 states and 62936 transitions. [2020-10-14 03:31:00,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:31:00,693 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 700 [2020-10-14 03:31:00,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:31:00,794 INFO L225 Difference]: With dead ends: 57959 [2020-10-14 03:31:00,794 INFO L226 Difference]: Without dead ends: 33190 [2020-10-14 03:31:00,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:31:00,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33190 states. [2020-10-14 03:31:01,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33190 to 31324. [2020-10-14 03:31:01,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31324 states. [2020-10-14 03:31:01,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31324 states to 31324 states and 33810 transitions. [2020-10-14 03:31:01,574 INFO L78 Accepts]: Start accepts. Automaton has 31324 states and 33810 transitions. Word has length 700 [2020-10-14 03:31:01,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:31:01,575 INFO L479 AbstractCegarLoop]: Abstraction has 31324 states and 33810 transitions. [2020-10-14 03:31:01,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:31:01,575 INFO L276 IsEmpty]: Start isEmpty. Operand 31324 states and 33810 transitions. [2020-10-14 03:31:01,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2020-10-14 03:31:01,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:31:01,589 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:31:01,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 03:31:01,590 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:31:01,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:31:01,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1821883234, now seen corresponding path program 1 times [2020-10-14 03:31:01,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:31:01,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937474564] [2020-10-14 03:31:01,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:31:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:01,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:02,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:02,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:03,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:06,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:06,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 734 [2020-10-14 03:31:06,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:31:06,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4655 [2020-10-14 03:31:06,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:06,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:06,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:31:06,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-14 03:31:06,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 03:31:06,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:06,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:31:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:06,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:06,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:06,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:31:06,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:06,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:31:06,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:06,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:06,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:31:06,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:31:06,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:31:06,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:06,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:31:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:06,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:06,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:06,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:31:06,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:06,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 03:31:06,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:06,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:06,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:31:06,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:31:06,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:31:06,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:06,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:31:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:06,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:06,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:06,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 03:31:06,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:06,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 03:31:06,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:06,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:06,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:31:06,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:31:06,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-14 03:31:06,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:06,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-14 03:31:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:06,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:07,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:07,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 03:31:07,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:07,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 03:31:07,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:07,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:07,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:31:07,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:31:07,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 03:31:07,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:07,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-14 03:31:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:07,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:07,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:07,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 03:31:07,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:07,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 03:31:07,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:07,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:07,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:31:07,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-14 03:31:07,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:31:07,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:07,552 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 403 proven. 77 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2020-10-14 03:31:07,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937474564] [2020-10-14 03:31:07,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:31:07,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:31:07,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937761796] [2020-10-14 03:31:07,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:31:07,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:31:07,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:31:07,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:31:07,555 INFO L87 Difference]: Start difference. First operand 31324 states and 33810 transitions. Second operand 7 states. [2020-10-14 03:31:17,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:31:17,075 INFO L93 Difference]: Finished difference Result 63556 states and 68788 transitions. [2020-10-14 03:31:17,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:31:17,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 718 [2020-10-14 03:31:17,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:31:17,129 INFO L225 Difference]: With dead ends: 63556 [2020-10-14 03:31:17,129 INFO L226 Difference]: Without dead ends: 34727 [2020-10-14 03:31:17,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:31:17,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34727 states. [2020-10-14 03:31:17,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34727 to 34414. [2020-10-14 03:31:17,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34414 states. [2020-10-14 03:31:17,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34414 states to 34414 states and 36880 transitions. [2020-10-14 03:31:17,629 INFO L78 Accepts]: Start accepts. Automaton has 34414 states and 36880 transitions. Word has length 718 [2020-10-14 03:31:17,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:31:17,630 INFO L479 AbstractCegarLoop]: Abstraction has 34414 states and 36880 transitions. [2020-10-14 03:31:17,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:31:17,630 INFO L276 IsEmpty]: Start isEmpty. Operand 34414 states and 36880 transitions. [2020-10-14 03:31:17,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2020-10-14 03:31:17,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:31:17,642 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:31:17,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 03:31:17,643 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:31:17,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:31:17,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1544835423, now seen corresponding path program 1 times [2020-10-14 03:31:17,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:31:17,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98432277] [2020-10-14 03:31:17,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:31:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:17,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:18,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:20,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:21,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:22,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:22,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 733 [2020-10-14 03:31:22,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:31:22,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 03:31:22,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:22,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:22,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:31:22,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 682 [2020-10-14 03:31:22,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 03:31:22,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:22,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:31:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:22,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:22,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:22,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:31:22,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:22,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:31:22,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:22,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:22,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:31:22,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:31:22,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:31:22,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:22,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:31:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:22,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:23,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:23,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:31:23,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:23,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 03:31:23,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:23,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:23,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:31:23,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:31:23,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:31:23,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:23,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:31:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:23,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:23,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:23,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:31:23,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:23,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 03:31:23,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:23,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:23,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:31:23,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:31:23,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:31:23,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:23,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 03:31:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:23,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:23,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:23,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-14 03:31:23,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:23,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 03:31:23,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:23,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:23,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:31:23,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:31:23,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 266 [2020-10-14 03:31:23,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:23,634 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 135 proven. 3 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2020-10-14 03:31:23,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98432277] [2020-10-14 03:31:23,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:31:23,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:31:23,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000166710] [2020-10-14 03:31:23,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:31:23,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:31:23,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:31:23,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:31:23,636 INFO L87 Difference]: Start difference. First operand 34414 states and 36880 transitions. Second operand 5 states. [2020-10-14 03:31:28,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:31:28,734 INFO L93 Difference]: Finished difference Result 36565 states and 39119 transitions. [2020-10-14 03:31:28,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:31:28,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 719 [2020-10-14 03:31:28,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:31:28,791 INFO L225 Difference]: With dead ends: 36565 [2020-10-14 03:31:28,791 INFO L226 Difference]: Without dead ends: 36563 [2020-10-14 03:31:28,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:31:28,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36563 states. [2020-10-14 03:31:29,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36563 to 34721. [2020-10-14 03:31:29,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34721 states. [2020-10-14 03:31:29,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34721 states to 34721 states and 37197 transitions. [2020-10-14 03:31:29,489 INFO L78 Accepts]: Start accepts. Automaton has 34721 states and 37197 transitions. Word has length 719 [2020-10-14 03:31:29,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:31:29,490 INFO L479 AbstractCegarLoop]: Abstraction has 34721 states and 37197 transitions. [2020-10-14 03:31:29,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:31:29,490 INFO L276 IsEmpty]: Start isEmpty. Operand 34721 states and 37197 transitions. [2020-10-14 03:31:29,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2020-10-14 03:31:29,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:31:29,505 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:31:29,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 03:31:29,505 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:31:29,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:31:29,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1552715137, now seen corresponding path program 1 times [2020-10-14 03:31:29,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:31:29,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325475936] [2020-10-14 03:31:29,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:31:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:29,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:30,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking...