/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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/Problem02_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:10:31,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:10:31,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:10:31,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:10:31,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:10:31,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:10:31,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:10:31,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:10:31,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:10:31,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:10:31,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:10:31,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:10:31,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:10:31,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:10:31,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:10:31,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:10:31,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:10:31,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:10:31,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:10:31,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:10:31,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:10:31,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:10:31,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:10:31,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:10:31,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:10:31,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:10:31,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:10:31,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:10:31,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:10:31,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:10:31,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:10:31,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:10:31,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:10:31,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:10:31,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:10:31,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:10:31,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:10:31,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:10:31,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:10:31,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:10:31,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:10:31,108 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 10:10:31,155 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:10:31,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:10:31,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:10:31,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:10:31,158 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:10:31,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:10:31,158 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:10:31,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:10:31,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:10:31,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:10:31,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:10:31,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:10:31,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:10:31,161 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:10:31,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:10:31,162 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:10:31,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:10:31,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:10:31,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:10:31,162 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:10:31,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:10:31,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:10:31,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:10:31,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:10:31,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:10:31,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:10:31,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:10:31,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:10:31,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:10:31,165 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:10:31,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:10:31,654 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:10:31,660 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:10:31,662 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:10:31,663 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:10:31,664 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label52.c [2020-09-25 10:10:31,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee1ffdcd1/342d8dab169d4458bd5c8e16b196a2ae/FLAGe13e8f1aa [2020-09-25 10:10:32,358 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:10:32,359 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label52.c [2020-09-25 10:10:32,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee1ffdcd1/342d8dab169d4458bd5c8e16b196a2ae/FLAGe13e8f1aa [2020-09-25 10:10:32,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee1ffdcd1/342d8dab169d4458bd5c8e16b196a2ae [2020-09-25 10:10:32,589 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:10:32,596 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:10:32,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:32,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:10:32,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:10:32,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:32" (1/1) ... [2020-09-25 10:10:32,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194bd3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:32, skipping insertion in model container [2020-09-25 10:10:32,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:32" (1/1) ... [2020-09-25 10:10:32,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:10:32,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:10:33,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:33,183 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:10:33,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:33,460 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:10:33,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:33 WrapperNode [2020-09-25 10:10:33,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:33,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:10:33,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:10:33,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:10:33,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:33" (1/1) ... [2020-09-25 10:10:33,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:33" (1/1) ... [2020-09-25 10:10:33,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:33" (1/1) ... [2020-09-25 10:10:33,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:33" (1/1) ... [2020-09-25 10:10:33,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:33" (1/1) ... [2020-09-25 10:10:33,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:33" (1/1) ... [2020-09-25 10:10:33,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:33" (1/1) ... [2020-09-25 10:10:33,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:10:33,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:10:33,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:10:33,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:10:33,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:33" (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 10:10:33,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:10:33,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:10:33,760 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:10:33,760 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:10:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:10:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:10:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:10:33,761 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:10:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:10:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:10:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:10:35,437 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:10:35,438 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:10:35,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:35 BoogieIcfgContainer [2020-09-25 10:10:35,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:10:35,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:10:35,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:10:35,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:10:35,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:10:32" (1/3) ... [2020-09-25 10:10:35,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a66a94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:35, skipping insertion in model container [2020-09-25 10:10:35,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:33" (2/3) ... [2020-09-25 10:10:35,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a66a94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:35, skipping insertion in model container [2020-09-25 10:10:35,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:35" (3/3) ... [2020-09-25 10:10:35,468 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label52.c [2020-09-25 10:10:35,481 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:10:35,497 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:10:35,521 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:10:35,560 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:10:35,561 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:10:35,562 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:10:35,562 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:10:35,563 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:10:35,563 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:10:35,563 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:10:35,563 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:10:35,610 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:10:35,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-09-25 10:10:35,631 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:35,633 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:10:35,633 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:35,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:35,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1349342961, now seen corresponding path program 1 times [2020-09-25 10:10:35,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:35,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840094341] [2020-09-25 10:10:35,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:36,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:36,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:37,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:38,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:38,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:38,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:39,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:39,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:40,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:40,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:40,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 10:10:40,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:10:40,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 10:10:40,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:40,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:40,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:10:40,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:10:40,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 10:10:40,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 10:10:41,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:41,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:41,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:41,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:41,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:41,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 10:10:41,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:41,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:41,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:41,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:41,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:10:41,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:41,297 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 10:10:41,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840094341] [2020-09-25 10:10:41,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:10:41,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:10:41,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546066550] [2020-09-25 10:10:41,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:10:41,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:41,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:10:41,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:10:41,333 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:10:43,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:43,533 INFO L93 Difference]: Finished difference Result 1248 states and 1696 transitions. [2020-09-25 10:10:43,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:10:43,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-09-25 10:10:43,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:43,560 INFO L225 Difference]: With dead ends: 1248 [2020-09-25 10:10:43,560 INFO L226 Difference]: Without dead ends: 670 [2020-09-25 10:10:43,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:10:43,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-25 10:10:43,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 621. [2020-09-25 10:10:43,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 10:10:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 10:10:43,711 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 130 [2020-09-25 10:10:43,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:43,715 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 10:10:43,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:10:43,715 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 10:10:43,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 10:10:43,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:43,732 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:10:43,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:10:43,733 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:43,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:43,735 INFO L82 PathProgramCache]: Analyzing trace with hash 463451242, now seen corresponding path program 1 times [2020-09-25 10:10:43,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:43,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407026576] [2020-09-25 10:10:43,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:43,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:43,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:44,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:44,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:45,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:48,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:48,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 10:10:48,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:10:48,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 10:10:48,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:48,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:48,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:48,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 10:10:48,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 10:10:48,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 10:10:48,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:48,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:49,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:49,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:49,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:49,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 10:10:49,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:49,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:49,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:49,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:49,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:49,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 10:10:49,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:49,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:49,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:49,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:10:49,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:49,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:10:49,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:49,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:49,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:49,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:49,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 10:10:49,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:49,123 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:49,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407026576] [2020-09-25 10:10:49,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:49,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:10:49,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268761046] [2020-09-25 10:10:49,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:10:49,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:49,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:10:49,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:10:49,131 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-25 10:10:51,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:51,121 INFO L93 Difference]: Finished difference Result 1531 states and 1847 transitions. [2020-09-25 10:10:51,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:10:51,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-09-25 10:10:51,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:51,134 INFO L225 Difference]: With dead ends: 1531 [2020-09-25 10:10:51,134 INFO L226 Difference]: Without dead ends: 932 [2020-09-25 10:10:51,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:10:51,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2020-09-25 10:10:51,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 922. [2020-09-25 10:10:51,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 922 states. [2020-09-25 10:10:51,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1103 transitions. [2020-09-25 10:10:51,186 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1103 transitions. Word has length 147 [2020-09-25 10:10:51,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:51,189 INFO L479 AbstractCegarLoop]: Abstraction has 922 states and 1103 transitions. [2020-09-25 10:10:51,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:10:51,189 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1103 transitions. [2020-09-25 10:10:51,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 10:10:51,194 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:51,195 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 10:10:51,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:10:51,195 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:51,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:51,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1283678850, now seen corresponding path program 1 times [2020-09-25 10:10:51,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:51,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521574324] [2020-09-25 10:10:51,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:51,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:51,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:51,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:51,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:52,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:53,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:54,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:54,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:55,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:55,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:55,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:56,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:56,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 10:10:56,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 10:10:56,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 10:10:56,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:56,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:56,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:10:56,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:10:56,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 10:10:56,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:56,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:56,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:56,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:56,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:56,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:56,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 10:10:56,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:56,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:56,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:56,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:56,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:10:56,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:56,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:56,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:56,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:56,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:56,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:10:56,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:56,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 10:10:56,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:56,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:56,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:56,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:56,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:10:56,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:56,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:10:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:56,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:56,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:56,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:56,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:10:56,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:56,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 10:10:56,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:56,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:56,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:10:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:10:56,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 10:10:57,277 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 10:10:57,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521574324] [2020-09-25 10:10:57,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:57,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:10:57,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510032941] [2020-09-25 10:10:57,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:10:57,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:57,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:10:57,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:10:57,283 INFO L87 Difference]: Start difference. First operand 922 states and 1103 transitions. Second operand 12 states. [2020-09-25 10:10:58,290 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-09-25 10:10:58,790 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-09-25 10:10:58,934 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-09-25 10:11:00,660 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-09-25 10:11:03,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:03,641 INFO L93 Difference]: Finished difference Result 3769 states and 5006 transitions. [2020-09-25 10:11:03,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 10:11:03,644 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 165 [2020-09-25 10:11:03,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:03,676 INFO L225 Difference]: With dead ends: 3769 [2020-09-25 10:11:03,676 INFO L226 Difference]: Without dead ends: 2607 [2020-09-25 10:11:03,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-09-25 10:11:03,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2020-09-25 10:11:03,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 1981. [2020-09-25 10:11:03,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2020-09-25 10:11:03,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 2407 transitions. [2020-09-25 10:11:03,787 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 2407 transitions. Word has length 165 [2020-09-25 10:11:03,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:03,788 INFO L479 AbstractCegarLoop]: Abstraction has 1981 states and 2407 transitions. [2020-09-25 10:11:03,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:11:03,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 2407 transitions. [2020-09-25 10:11:03,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 10:11:03,799 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:03,800 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:03,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:11:03,800 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:03,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:03,801 INFO L82 PathProgramCache]: Analyzing trace with hash -898114011, now seen corresponding path program 1 times [2020-09-25 10:11:03,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:03,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39485275] [2020-09-25 10:11:03,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:03,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:03,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:04,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:05,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:05,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:05,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:06,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:06,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:08,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:08,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 10:11:08,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:11:08,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 10:11:08,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:08,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:08,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:11:08,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:11:08,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-25 10:11:08,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:11:09,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:09,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:09,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:09,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:11:09,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:09,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:11:09,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:09,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:09,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:09,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:09,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:11:09,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:09,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:11:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:09,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:09,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:09,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:09,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:11:09,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:09,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:11:09,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:09,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:09,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:09,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:09,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:11:09,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:09,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:11:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:09,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:09,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:09,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:09,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:11:09,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:09,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 10:11:09,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:09,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:11:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:09,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:11:09,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:09,638 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 10:11:09,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39485275] [2020-09-25 10:11:09,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:09,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:11:09,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305640866] [2020-09-25 10:11:09,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:11:09,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:09,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:11:09,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:11:09,642 INFO L87 Difference]: Start difference. First operand 1981 states and 2407 transitions. Second operand 11 states. [2020-09-25 10:11:13,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:13,261 INFO L93 Difference]: Finished difference Result 5103 states and 6501 transitions. [2020-09-25 10:11:13,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:11:13,261 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 181 [2020-09-25 10:11:13,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:13,272 INFO L225 Difference]: With dead ends: 5103 [2020-09-25 10:11:13,273 INFO L226 Difference]: Without dead ends: 1914 [2020-09-25 10:11:13,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:11:13,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2020-09-25 10:11:13,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1904. [2020-09-25 10:11:13,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1904 states. [2020-09-25 10:11:13,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 2268 transitions. [2020-09-25 10:11:13,351 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 2268 transitions. Word has length 181 [2020-09-25 10:11:13,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:13,352 INFO L479 AbstractCegarLoop]: Abstraction has 1904 states and 2268 transitions. [2020-09-25 10:11:13,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:11:13,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 2268 transitions. [2020-09-25 10:11:13,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-09-25 10:11:13,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:13,361 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-09-25 10:11:13,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:11:13,361 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:13,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:13,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1811074560, now seen corresponding path program 1 times [2020-09-25 10:11:13,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:13,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259744145] [2020-09-25 10:11:13,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:13,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:13,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:13,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:13,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:14,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:14,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:15,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:16,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:16,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:17,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:17,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:18,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:18,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-09-25 10:11:18,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 10:11:18,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 10:11:18,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:18,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:18,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 10:11:18,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:11:18,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 10:11:18,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:11:18,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:18,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:18,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:18,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:11:18,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:18,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:11:18,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:18,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:18,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:18,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:18,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:11:18,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:18,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:11:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:18,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:18,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:18,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:18,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:11:18,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:18,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 10:11:18,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:18,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:18,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:18,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:18,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:11:18,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:18,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:11:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:18,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:18,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:18,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:18,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:11:18,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:18,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 10:11:18,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:18,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:18,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:18,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:18,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 10:11:18,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:11:18,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 10:11:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:18,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:18,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:18,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:18,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:11:18,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:18,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 10:11:18,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:18,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:18,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:18,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:18,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:11:18,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:11:18,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-25 10:11:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:18,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:18,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:18,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 10:11:18,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:18,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 10:11:18,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:18,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:18,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:18,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:18,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 10:11:18,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:11:19,041 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 112 proven. 6 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-09-25 10:11:19,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259744145] [2020-09-25 10:11:19,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:19,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:11:19,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230936896] [2020-09-25 10:11:19,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:11:19,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:19,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:11:19,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:11:19,044 INFO L87 Difference]: Start difference. First operand 1904 states and 2268 transitions. Second operand 8 states.