/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:38:24,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:38:24,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:38:24,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:38:24,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:38:24,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:38:24,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:38:24,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:38:24,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:38:24,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:38:24,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:38:24,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:38:24,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:38:24,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:38:24,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:38:24,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:38:24,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:38:24,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:38:24,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:38:24,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:38:24,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:38:24,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:38:24,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:38:24,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:38:24,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:38:24,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:38:24,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:38:24,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:38:24,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:38:24,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:38:24,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:38:24,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:38:24,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:38:24,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:38:24,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:38:24,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:38:24,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:38:24,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:38:24,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:38:24,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:38:24,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:38:24,192 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:38:24,237 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:38:24,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:38:24,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:38:24,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:38:24,240 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:38:24,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:38:24,241 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:38:24,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:38:24,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:38:24,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:38:24,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:38:24,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:38:24,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:38:24,243 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:38:24,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:38:24,244 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:38:24,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:38:24,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:38:24,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:38:24,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:38:24,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:38:24,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:38:24,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:38:24,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:38:24,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:38:24,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:38:24,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:38:24,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:38:24,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:38:24,247 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:38:24,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:38:24,724 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:38:24,729 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:38:24,731 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:38:24,732 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:38:24,733 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label19.c [2020-09-25 05:38:24,826 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a06b22e86/d39a69de70d04c60b369de7701c63458/FLAG52b2d4515 [2020-09-25 05:38:25,469 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:38:25,470 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label19.c [2020-09-25 05:38:25,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a06b22e86/d39a69de70d04c60b369de7701c63458/FLAG52b2d4515 [2020-09-25 05:38:25,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a06b22e86/d39a69de70d04c60b369de7701c63458 [2020-09-25 05:38:25,721 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:38:25,729 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:38:25,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:38:25,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:38:25,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:38:25,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:38:25" (1/1) ... [2020-09-25 05:38:25,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1987833a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:25, skipping insertion in model container [2020-09-25 05:38:25,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:38:25" (1/1) ... [2020-09-25 05:38:25,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:38:25,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:38:26,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:38:26,333 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:38:26,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:38:26,608 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:38:26,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:26 WrapperNode [2020-09-25 05:38:26,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:38:26,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:38:26,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:38:26,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:38:26,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:26" (1/1) ... [2020-09-25 05:38:26,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:26" (1/1) ... [2020-09-25 05:38:26,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:26" (1/1) ... [2020-09-25 05:38:26,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:26" (1/1) ... [2020-09-25 05:38:26,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:26" (1/1) ... [2020-09-25 05:38:26,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:26" (1/1) ... [2020-09-25 05:38:26,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:26" (1/1) ... [2020-09-25 05:38:26,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:38:26,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:38:26,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:38:26,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:38:26,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:38:26,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:38:26,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:38:26,834 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:38:26,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:38:26,834 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:38:26,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:38:26,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:38:26,836 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:38:26,836 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:38:26,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:38:26,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:38:28,402 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:38:28,402 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:38:28,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:38:28 BoogieIcfgContainer [2020-09-25 05:38:28,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:38:28,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:38:28,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:38:28,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:38:28,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:38:25" (1/3) ... [2020-09-25 05:38:28,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9fbdfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:38:28, skipping insertion in model container [2020-09-25 05:38:28,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:26" (2/3) ... [2020-09-25 05:38:28,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9fbdfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:38:28, skipping insertion in model container [2020-09-25 05:38:28,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:38:28" (3/3) ... [2020-09-25 05:38:28,435 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label19.c [2020-09-25 05:38:28,448 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:38:28,464 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:38:28,488 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:38:28,529 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:38:28,530 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:38:28,530 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:38:28,530 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:38:28,530 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:38:28,531 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:38:28,531 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:38:28,531 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:38:28,572 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 05:38:28,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 05:38:28,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:28,586 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] [2020-09-25 05:38:28,586 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:28,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:28,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1688264769, now seen corresponding path program 1 times [2020-09-25 05:38:28,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:28,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999709189] [2020-09-25 05:38:28,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:28,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:29,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:29,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:29,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 05:38:29,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:38:29,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-09-25 05:38:29,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:29,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:29,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:38:29,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:38:29,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 05:38:29,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:38:29,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:29,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:29,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:29,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:29,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:29,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 05:38:29,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:29,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:29,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:29,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:29,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:38:29,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:29,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:29,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999709189] [2020-09-25 05:38:29,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:38:29,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:38:29,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196654398] [2020-09-25 05:38:29,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:38:29,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:29,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:38:29,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:38:29,598 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 05:38:31,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:31,858 INFO L93 Difference]: Finished difference Result 1163 states and 1589 transitions. [2020-09-25 05:38:31,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:38:31,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-09-25 05:38:31,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:31,885 INFO L225 Difference]: With dead ends: 1163 [2020-09-25 05:38:31,885 INFO L226 Difference]: Without dead ends: 634 [2020-09-25 05:38:31,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:31,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-09-25 05:38:31,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 580. [2020-09-25 05:38:31,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-09-25 05:38:31,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 732 transitions. [2020-09-25 05:38:32,002 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 732 transitions. Word has length 48 [2020-09-25 05:38:32,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:32,003 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 732 transitions. [2020-09-25 05:38:32,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:38:32,003 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 732 transitions. [2020-09-25 05:38:32,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 05:38:32,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:32,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:38:32,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:38:32,012 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:32,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:32,013 INFO L82 PathProgramCache]: Analyzing trace with hash -2006898993, now seen corresponding path program 1 times [2020-09-25 05:38:32,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:32,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600710894] [2020-09-25 05:38:32,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:32,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:32,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:32,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:32,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:32,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:34,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:34,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 05:38:34,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:38:34,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2800 [2020-09-25 05:38:34,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:34,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:34,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:34,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 05:38:34,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 05:38:34,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:34,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:34,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:34,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:34,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:34,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:34,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:38:34,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:34,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:34,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:34,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:34,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:34,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:34,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:35,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:35,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:35,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:38:35,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:35,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 05:38:35,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:35,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:35,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:35,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:35,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 05:38:35,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:35,165 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:35,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600710894] [2020-09-25 05:38:35,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:35,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:38:35,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734415702] [2020-09-25 05:38:35,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:35,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:35,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:35,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:35,170 INFO L87 Difference]: Start difference. First operand 580 states and 732 transitions. Second operand 5 states. [2020-09-25 05:38:37,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:37,014 INFO L93 Difference]: Finished difference Result 1461 states and 1941 transitions. [2020-09-25 05:38:37,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:37,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-09-25 05:38:37,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:37,025 INFO L225 Difference]: With dead ends: 1461 [2020-09-25 05:38:37,025 INFO L226 Difference]: Without dead ends: 896 [2020-09-25 05:38:37,029 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 [2020-09-25 05:38:37,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-09-25 05:38:37,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 884. [2020-09-25 05:38:37,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-09-25 05:38:37,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1146 transitions. [2020-09-25 05:38:37,091 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1146 transitions. Word has length 127 [2020-09-25 05:38:37,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:37,092 INFO L479 AbstractCegarLoop]: Abstraction has 884 states and 1146 transitions. [2020-09-25 05:38:37,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:37,093 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1146 transitions. [2020-09-25 05:38:37,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 05:38:37,098 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:37,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:38:37,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:38:37,099 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:37,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:37,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1780229195, now seen corresponding path program 1 times [2020-09-25 05:38:37,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:37,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675658058] [2020-09-25 05:38:37,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:37,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:37,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:38,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:38,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 05:38:38,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:38:38,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1225 [2020-09-25 05:38:38,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:38,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:38,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:38,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 05:38:38,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 05:38:38,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:38,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:38,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:38,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:38,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:38,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:38,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:38:38,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:38,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:38,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:38,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:38,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:38,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:38,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:38,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:38,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:38,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 05:38:38,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:38,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 05:38:38,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:38,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:38,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:38,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:38,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 05:38:38,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:38,657 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:38,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675658058] [2020-09-25 05:38:38,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:38,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:38:38,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724376375] [2020-09-25 05:38:38,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:38,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:38,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:38,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:38,660 INFO L87 Difference]: Start difference. First operand 884 states and 1146 transitions. Second operand 5 states. [2020-09-25 05:38:40,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:40,245 INFO L93 Difference]: Finished difference Result 2069 states and 2780 transitions. [2020-09-25 05:38:40,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:40,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 05:38:40,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:40,259 INFO L225 Difference]: With dead ends: 2069 [2020-09-25 05:38:40,259 INFO L226 Difference]: Without dead ends: 1200 [2020-09-25 05:38:40,264 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 [2020-09-25 05:38:40,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2020-09-25 05:38:40,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1190. [2020-09-25 05:38:40,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1190 states. [2020-09-25 05:38:40,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1523 transitions. [2020-09-25 05:38:40,317 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1523 transitions. Word has length 139 [2020-09-25 05:38:40,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:40,319 INFO L479 AbstractCegarLoop]: Abstraction has 1190 states and 1523 transitions. [2020-09-25 05:38:40,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:40,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1523 transitions. [2020-09-25 05:38:40,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 05:38:40,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:40,339 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:38:40,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:38:40,340 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:40,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:40,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1973860715, now seen corresponding path program 1 times [2020-09-25 05:38:40,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:40,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613722678] [2020-09-25 05:38:40,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:40,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:40,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:40,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:41,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:43,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:43,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:45,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:45,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 05:38:45,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:38:45,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:38:45,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:45,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:45,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:45,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-25 05:38:45,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 05:38:45,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:45,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:45,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:45,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:45,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:45,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:45,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:38:45,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:45,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:45,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:45,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:45,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:45,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:45,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:45,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:45,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:45,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 05:38:45,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:45,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 05:38:45,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:45,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:45,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:45,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:45,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 05:38:45,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:45,730 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:45,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613722678] [2020-09-25 05:38:45,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:45,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:38:45,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948734010] [2020-09-25 05:38:45,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:45,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:45,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:45,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:45,735 INFO L87 Difference]: Start difference. First operand 1190 states and 1523 transitions. Second operand 5 states. [2020-09-25 05:38:47,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:47,537 INFO L93 Difference]: Finished difference Result 1845 states and 2449 transitions. [2020-09-25 05:38:47,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:47,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-09-25 05:38:47,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:47,551 INFO L225 Difference]: With dead ends: 1845 [2020-09-25 05:38:47,551 INFO L226 Difference]: Without dead ends: 1843 [2020-09-25 05:38:47,553 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 [2020-09-25 05:38:47,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2020-09-25 05:38:47,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1649. [2020-09-25 05:38:47,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1649 states. [2020-09-25 05:38:47,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2175 transitions. [2020-09-25 05:38:47,657 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2175 transitions. Word has length 140 [2020-09-25 05:38:47,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:47,658 INFO L479 AbstractCegarLoop]: Abstraction has 1649 states and 2175 transitions. [2020-09-25 05:38:47,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:47,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2175 transitions. [2020-09-25 05:38:47,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-25 05:38:47,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:47,664 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:38:47,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:38:47,665 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:47,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:47,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1458927402, now seen corresponding path program 1 times [2020-09-25 05:38:47,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:47,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966305299] [2020-09-25 05:38:47,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:47,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:48,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:48,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:48,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:48,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:48,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:52,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:52,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 05:38:52,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:38:52,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:38:52,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:52,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:52,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:52,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-09-25 05:38:52,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:38:52,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:52,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:52,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:52,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:52,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:52,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:52,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:38:52,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:52,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:52,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:52,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:52,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:52,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:52,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:52,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:52,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:52,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 05:38:52,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:52,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 05:38:52,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:52,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:52,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:52,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:52,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 05:38:52,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:38:53,110 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:53,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966305299] [2020-09-25 05:38:53,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:53,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:38:53,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947198010] [2020-09-25 05:38:53,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:53,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:53,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:53,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:53,113 INFO L87 Difference]: Start difference. First operand 1649 states and 2175 transitions. Second operand 5 states. [2020-09-25 05:38:54,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:54,708 INFO L93 Difference]: Finished difference Result 4065 states and 5555 transitions. [2020-09-25 05:38:54,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:54,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-09-25 05:38:54,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:54,724 INFO L225 Difference]: With dead ends: 4065 [2020-09-25 05:38:54,724 INFO L226 Difference]: Without dead ends: 2431 [2020-09-25 05:38:54,731 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 [2020-09-25 05:38:54,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2020-09-25 05:38:54,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1959. [2020-09-25 05:38:54,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2020-09-25 05:38:54,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 2539 transitions. [2020-09-25 05:38:54,802 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 2539 transitions. Word has length 194 [2020-09-25 05:38:54,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:54,803 INFO L479 AbstractCegarLoop]: Abstraction has 1959 states and 2539 transitions. [2020-09-25 05:38:54,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:54,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 2539 transitions. [2020-09-25 05:38:54,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 05:38:54,809 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:54,809 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:38:54,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:38:54,809 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:54,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:54,810 INFO L82 PathProgramCache]: Analyzing trace with hash 638713511, now seen corresponding path program 1 times [2020-09-25 05:38:54,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:54,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383034460] [2020-09-25 05:38:54,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:54,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:54,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:55,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:55,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:58,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:58,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:59,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:59,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:59,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:59,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-25 05:38:59,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:38:59,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:38:59,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:59,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:59,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:59,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-09-25 05:38:59,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:38:59,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:59,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:59,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:59,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:59,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:59,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:59,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:38:59,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:59,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:59,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:00,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:00,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:00,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:00,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 05:39:00,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:00,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 05:39:00,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:00,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:00,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:00,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:00,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 05:39:00,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:00,317 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:00,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383034460] [2020-09-25 05:39:00,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:00,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:00,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394319285] [2020-09-25 05:39:00,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:00,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:00,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:00,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:00,322 INFO L87 Difference]: Start difference. First operand 1959 states and 2539 transitions. Second operand 5 states. [2020-09-25 05:39:02,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:02,433 INFO L93 Difference]: Finished difference Result 4541 states and 6113 transitions. [2020-09-25 05:39:02,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:02,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-09-25 05:39:02,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:02,450 INFO L225 Difference]: With dead ends: 4541 [2020-09-25 05:39:02,450 INFO L226 Difference]: Without dead ends: 2597 [2020-09-25 05:39:02,460 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 [2020-09-25 05:39:02,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2020-09-25 05:39:02,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2417. [2020-09-25 05:39:02,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2417 states. [2020-09-25 05:39:02,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2417 states to 2417 states and 3100 transitions. [2020-09-25 05:39:02,548 INFO L78 Accepts]: Start accepts. Automaton has 2417 states and 3100 transitions. Word has length 199 [2020-09-25 05:39:02,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:02,549 INFO L479 AbstractCegarLoop]: Abstraction has 2417 states and 3100 transitions. [2020-09-25 05:39:02,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:02,549 INFO L276 IsEmpty]: Start isEmpty. Operand 2417 states and 3100 transitions. [2020-09-25 05:39:02,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-09-25 05:39:02,559 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:02,560 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:39:02,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:39:02,560 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:02,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:02,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1194311889, now seen corresponding path program 1 times [2020-09-25 05:39:02,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:02,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417545353] [2020-09-25 05:39:02,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:02,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:02,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:03,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:04,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:04,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:05,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:07,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:07,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-09-25 05:39:07,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:39:07,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 05:39:07,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:07,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:07,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:07,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 05:39:07,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 05:39:07,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:07,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:07,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:07,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:07,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:07,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:07,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:39:07,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:07,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:07,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:07,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:07,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:07,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:07,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:07,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:07,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:07,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 05:39:07,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:07,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 05:39:07,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:07,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:07,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:07,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:07,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 05:39:07,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:07,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-25 05:39:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:07,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:08,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:08,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 05:39:08,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:08,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-09-25 05:39:08,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:08,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:08,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:08,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:39:08,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 05:39:08,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:39:08,412 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:39:08,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417545353] [2020-09-25 05:39:08,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:08,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:39:08,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944201489] [2020-09-25 05:39:08,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:39:08,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:08,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:39:08,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:39:08,415 INFO L87 Difference]: Start difference. First operand 2417 states and 3100 transitions. Second operand 7 states. [2020-09-25 05:39:11,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:11,089 INFO L93 Difference]: Finished difference Result 6037 states and 8246 transitions. [2020-09-25 05:39:11,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 05:39:11,090 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 264 [2020-09-25 05:39:11,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:11,115 INFO L225 Difference]: With dead ends: 6037 [2020-09-25 05:39:11,115 INFO L226 Difference]: Without dead ends: 3635 [2020-09-25 05:39:11,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:39:11,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3635 states. [2020-09-25 05:39:11,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3635 to 3042. [2020-09-25 05:39:11,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3042 states. [2020-09-25 05:39:11,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3042 states to 3042 states and 3850 transitions. [2020-09-25 05:39:11,251 INFO L78 Accepts]: Start accepts. Automaton has 3042 states and 3850 transitions. Word has length 264 [2020-09-25 05:39:11,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:11,252 INFO L479 AbstractCegarLoop]: Abstraction has 3042 states and 3850 transitions. [2020-09-25 05:39:11,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:39:11,253 INFO L276 IsEmpty]: Start isEmpty. Operand 3042 states and 3850 transitions. [2020-09-25 05:39:11,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-09-25 05:39:11,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:11,268 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:39:11,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:39:11,268 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:11,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:11,269 INFO L82 PathProgramCache]: Analyzing trace with hash -717885772, now seen corresponding path program 1 times [2020-09-25 05:39:11,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:11,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465424771] [2020-09-25 05:39:11,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:11,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:11,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:11,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking...