/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:03:00,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:03:00,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:03:01,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:03:01,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:03:01,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:03:01,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:03:01,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:03:01,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:03:01,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:03:01,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:03:01,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:03:01,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:03:01,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:03:01,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:03:01,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:03:01,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:03:01,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:03:01,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:03:01,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:03:01,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:03:01,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:03:01,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:03:01,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:03:01,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:03:01,091 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:03:01,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:03:01,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:03:01,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:03:01,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:03:01,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:03:01,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:03:01,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:03:01,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:03:01,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:03:01,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:03:01,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:03:01,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:03:01,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:03:01,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:03:01,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:03:01,107 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 21:03:01,129 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:03:01,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:03:01,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:03:01,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:03:01,131 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:03:01,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:03:01,131 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:03:01,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:03:01,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:03:01,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:03:01,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:03:01,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:03:01,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:03:01,133 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:03:01,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:03:01,133 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:03:01,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:03:01,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:03:01,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:03:01,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:03:01,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:03:01,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:03:01,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:03:01,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:03:01,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:03:01,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:03:01,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:03:01,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:03:01,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:03:01,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:03:01,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:03:01,449 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:03:01,456 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:03:01,458 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:03:01,458 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:03:01,459 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label48.c [2020-10-14 21:03:01,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75cdd4e72/c1210fd398a6484b87ef96eea5baac75/FLAGabfeb23d3 [2020-10-14 21:03:02,163 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:03:02,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label48.c [2020-10-14 21:03:02,181 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75cdd4e72/c1210fd398a6484b87ef96eea5baac75/FLAGabfeb23d3 [2020-10-14 21:03:02,408 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75cdd4e72/c1210fd398a6484b87ef96eea5baac75 [2020-10-14 21:03:02,417 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:03:02,418 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:03:02,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:03:02,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:03:02,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:03:02,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:03:02" (1/1) ... [2020-10-14 21:03:02,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2970dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:02, skipping insertion in model container [2020-10-14 21:03:02,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:03:02" (1/1) ... [2020-10-14 21:03:02,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:03:02,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:03:03,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:03:03,199 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:03:03,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:03:03,394 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:03:03,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:03 WrapperNode [2020-10-14 21:03:03,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:03:03,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:03:03,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:03:03,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:03:03,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:03" (1/1) ... [2020-10-14 21:03:03,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:03" (1/1) ... [2020-10-14 21:03:03,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:03" (1/1) ... [2020-10-14 21:03:03,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:03" (1/1) ... [2020-10-14 21:03:03,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:03" (1/1) ... [2020-10-14 21:03:03,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:03" (1/1) ... [2020-10-14 21:03:03,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:03" (1/1) ... [2020-10-14 21:03:03,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:03:03,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:03:03,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:03:03,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:03:03,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:03:03,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:03:03,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:03:03,676 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:03:03,676 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:03:03,676 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:03:03,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:03:03,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:03:03,677 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:03:03,677 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:03:03,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:03:03,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:03:05,404 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:03:05,404 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:03:05,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:03:05 BoogieIcfgContainer [2020-10-14 21:03:05,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:03:05,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:03:05,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:03:05,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:03:05,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:03:02" (1/3) ... [2020-10-14 21:03:05,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b29978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:03:05, skipping insertion in model container [2020-10-14 21:03:05,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:03" (2/3) ... [2020-10-14 21:03:05,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b29978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:03:05, skipping insertion in model container [2020-10-14 21:03:05,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:03:05" (3/3) ... [2020-10-14 21:03:05,420 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label48.c [2020-10-14 21:03:05,431 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:03:05,439 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:03:05,453 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:03:05,481 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:03:05,481 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:03:05,481 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:03:05,481 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:03:05,482 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:03:05,482 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:03:05,482 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:03:05,482 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:03:05,508 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-14 21:03:05,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 21:03:05,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:03:05,519 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] [2020-10-14 21:03:05,520 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:03:05,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:03:05,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1357011669, now seen corresponding path program 1 times [2020-10-14 21:03:05,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:03:05,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197815611] [2020-10-14 21:03:05,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:03:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:05,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:06,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:06,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 21:03:06,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:06,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-10-14 21:03:06,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:06,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:06,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:03:06,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:03:06,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 21:03:06,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:03:06,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:03:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:06,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:06,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:06,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:03:06,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:06,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:03:06,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:06,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:06,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:03:06,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:06,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:03:06,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:06,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:03:06,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197815611] [2020-10-14 21:03:06,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:03:06,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:03:06,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559207249] [2020-10-14 21:03:06,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:03:06,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:03:06,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:03:06,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:03:06,465 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-10-14 21:03:08,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:03:08,687 INFO L93 Difference]: Finished difference Result 799 states and 1401 transitions. [2020-10-14 21:03:08,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:03:08,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-14 21:03:08,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:03:08,710 INFO L225 Difference]: With dead ends: 799 [2020-10-14 21:03:08,711 INFO L226 Difference]: Without dead ends: 443 [2020-10-14 21:03:08,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:03:08,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-10-14 21:03:08,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 429. [2020-10-14 21:03:08,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-10-14 21:03:08,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 645 transitions. [2020-10-14 21:03:08,807 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 645 transitions. Word has length 56 [2020-10-14 21:03:08,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:03:08,808 INFO L479 AbstractCegarLoop]: Abstraction has 429 states and 645 transitions. [2020-10-14 21:03:08,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:03:08,808 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 645 transitions. [2020-10-14 21:03:08,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 21:03:08,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:03:08,816 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:03:08,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:03:08,816 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:03:08,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:03:08,817 INFO L82 PathProgramCache]: Analyzing trace with hash -985448178, now seen corresponding path program 1 times [2020-10-14 21:03:08,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:03:08,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580043982] [2020-10-14 21:03:08,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:03:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:08,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:09,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:10,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:10,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 21:03:10,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:03:10,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1360 [2020-10-14 21:03:10,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:10,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:10,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:03:10,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:03:10,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:03:10,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:03:10,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:03:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:10,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:10,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:10,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:03:10,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:10,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:03:10,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:10,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:10,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:03:10,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:10,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:03:10,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:10,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:03:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:10,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:10,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:10,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 21:03:10,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:10,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-14 21:03:10,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:10,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:10,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:10,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:03:10,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 21:03:10,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 21:03:10,724 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:03:10,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580043982] [2020-10-14 21:03:10,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:03:10,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:03:10,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176222765] [2020-10-14 21:03:10,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:03:10,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:03:10,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:03:10,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:03:10,728 INFO L87 Difference]: Start difference. First operand 429 states and 645 transitions. Second operand 7 states. [2020-10-14 21:03:13,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:03:13,347 INFO L93 Difference]: Finished difference Result 1262 states and 1924 transitions. [2020-10-14 21:03:13,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:03:13,348 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 126 [2020-10-14 21:03:13,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:03:13,355 INFO L225 Difference]: With dead ends: 1262 [2020-10-14 21:03:13,355 INFO L226 Difference]: Without dead ends: 839 [2020-10-14 21:03:13,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:03:13,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2020-10-14 21:03:13,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 821. [2020-10-14 21:03:13,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-10-14 21:03:13,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1124 transitions. [2020-10-14 21:03:13,414 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1124 transitions. Word has length 126 [2020-10-14 21:03:13,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:03:13,414 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 1124 transitions. [2020-10-14 21:03:13,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:03:13,414 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1124 transitions. [2020-10-14 21:03:13,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 21:03:13,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:03:13,420 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:03:13,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:03:13,421 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:03:13,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:03:13,421 INFO L82 PathProgramCache]: Analyzing trace with hash 876528326, now seen corresponding path program 1 times [2020-10-14 21:03:13,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:03:13,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021969369] [2020-10-14 21:03:13,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:03:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:13,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:13,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:13,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:15,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:15,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 21:03:15,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:03:15,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1612 [2020-10-14 21:03:15,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:15,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:15,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:03:15,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:03:15,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 21:03:15,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:15,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:03:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:15,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:15,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:15,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:03:15,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:15,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:03:15,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:15,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:15,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:03:15,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:15,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:03:15,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:15,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:03:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:15,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:15,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:15,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 21:03:15,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:15,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 21:03:15,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:15,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:15,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:15,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:03:15,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:03:15,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:15,507 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:03:15,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021969369] [2020-10-14 21:03:15,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:03:15,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:03:15,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747275696] [2020-10-14 21:03:15,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:03:15,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:03:15,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:03:15,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:03:15,512 INFO L87 Difference]: Start difference. First operand 821 states and 1124 transitions. Second operand 7 states. [2020-10-14 21:03:18,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:03:18,425 INFO L93 Difference]: Finished difference Result 2428 states and 3367 transitions. [2020-10-14 21:03:18,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 21:03:18,427 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-14 21:03:18,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:03:18,447 INFO L225 Difference]: With dead ends: 2428 [2020-10-14 21:03:18,447 INFO L226 Difference]: Without dead ends: 1613 [2020-10-14 21:03:18,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:03:18,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2020-10-14 21:03:18,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1603. [2020-10-14 21:03:18,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1603 states. [2020-10-14 21:03:18,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 2019 transitions. [2020-10-14 21:03:18,617 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 2019 transitions. Word has length 130 [2020-10-14 21:03:18,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:03:18,618 INFO L479 AbstractCegarLoop]: Abstraction has 1603 states and 2019 transitions. [2020-10-14 21:03:18,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:03:18,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 2019 transitions. [2020-10-14 21:03:18,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-14 21:03:18,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:03:18,634 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:03:18,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:03:18,638 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:03:18,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:03:18,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1492344332, now seen corresponding path program 1 times [2020-10-14 21:03:18,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:03:18,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618323771] [2020-10-14 21:03:18,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:03:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:18,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:19,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:19,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-14 21:03:19,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:19,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-14 21:03:19,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:19,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:19,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:19,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 21:03:19,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 21:03:19,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:19,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:03:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:19,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:19,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:19,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:03:19,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:19,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:03:19,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:19,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:03:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:03:19,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:19,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:03:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:19,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:19,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:19,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:03:19,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:19,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 21:03:19,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:19,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:19,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:03:19,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:19,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:03:19,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:19,466 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:03:19,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618323771] [2020-10-14 21:03:19,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:03:19,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:03:19,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157958052] [2020-10-14 21:03:19,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:03:19,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:03:19,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:03:19,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:03:19,471 INFO L87 Difference]: Start difference. First operand 1603 states and 2019 transitions. Second operand 5 states. [2020-10-14 21:03:21,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:03:21,650 INFO L93 Difference]: Finished difference Result 3425 states and 4522 transitions. [2020-10-14 21:03:21,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:03:21,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-14 21:03:21,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:03:21,671 INFO L225 Difference]: With dead ends: 3425 [2020-10-14 21:03:21,671 INFO L226 Difference]: Without dead ends: 2206 [2020-10-14 21:03:21,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:03:21,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2020-10-14 21:03:21,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 2186. [2020-10-14 21:03:21,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2186 states. [2020-10-14 21:03:21,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2186 states to 2186 states and 2744 transitions. [2020-10-14 21:03:21,784 INFO L78 Accepts]: Start accepts. Automaton has 2186 states and 2744 transitions. Word has length 187 [2020-10-14 21:03:21,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:03:21,786 INFO L479 AbstractCegarLoop]: Abstraction has 2186 states and 2744 transitions. [2020-10-14 21:03:21,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:03:21,787 INFO L276 IsEmpty]: Start isEmpty. Operand 2186 states and 2744 transitions. [2020-10-14 21:03:21,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-14 21:03:21,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:03:21,796 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:03:21,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:03:21,797 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:03:21,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:03:21,797 INFO L82 PathProgramCache]: Analyzing trace with hash 2061772063, now seen corresponding path program 1 times [2020-10-14 21:03:21,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:03:21,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566973667] [2020-10-14 21:03:21,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:03:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:21,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:22,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:22,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:23,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:23,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-14 21:03:23,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:03:23,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2090 [2020-10-14 21:03:23,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:23,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:23,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:23,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 21:03:23,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 21:03:23,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:03:24,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:03:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:24,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:24,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:24,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:03:24,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:24,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:03:24,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:24,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:24,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:03:24,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:24,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:03:24,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:24,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:03:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:24,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:24,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:24,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:03:24,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:24,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 21:03:24,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:24,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:24,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:03:24,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:24,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:03:24,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:24,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:03:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:24,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:24,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:24,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 21:03:24,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:24,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 21:03:24,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:24,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:24,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:24,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:03:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:03:24,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:24,682 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:03:24,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566973667] [2020-10-14 21:03:24,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:03:24,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:03:24,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918357534] [2020-10-14 21:03:24,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:03:24,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:03:24,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:03:24,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:03:24,686 INFO L87 Difference]: Start difference. First operand 2186 states and 2744 transitions. Second operand 7 states. [2020-10-14 21:03:27,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:03:27,899 INFO L93 Difference]: Finished difference Result 4399 states and 5636 transitions. [2020-10-14 21:03:27,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 21:03:27,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-10-14 21:03:27,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:03:27,919 INFO L225 Difference]: With dead ends: 4399 [2020-10-14 21:03:27,919 INFO L226 Difference]: Without dead ends: 2597 [2020-10-14 21:03:27,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:03:27,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2020-10-14 21:03:27,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2582. [2020-10-14 21:03:27,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2582 states. [2020-10-14 21:03:27,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2582 states to 2582 states and 3227 transitions. [2020-10-14 21:03:27,998 INFO L78 Accepts]: Start accepts. Automaton has 2582 states and 3227 transitions. Word has length 246 [2020-10-14 21:03:27,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:03:27,998 INFO L479 AbstractCegarLoop]: Abstraction has 2582 states and 3227 transitions. [2020-10-14 21:03:27,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:03:27,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2582 states and 3227 transitions. [2020-10-14 21:03:28,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-14 21:03:28,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:03:28,004 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:03:28,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:03:28,004 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:03:28,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:03:28,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1972326955, now seen corresponding path program 1 times [2020-10-14 21:03:28,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:03:28,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067475634] [2020-10-14 21:03:28,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:03:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:28,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:28,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:28,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:28,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-14 21:03:28,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:03:28,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 919 [2020-10-14 21:03:28,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:28,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:28,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:28,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-14 21:03:28,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 21:03:28,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:29,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:03:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:29,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:29,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:29,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:03:29,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:29,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:03:29,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:29,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:29,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:03:29,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:29,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:03:29,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:29,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:03:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:29,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:29,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:29,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:03:29,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:29,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 21:03:29,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:29,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:29,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:03:29,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:29,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:03:29,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:29,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:03:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:29,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:29,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:29,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 21:03:29,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:29,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 21:03:29,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:29,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:29,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:03:29,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:29,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 21:03:29,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:29,362 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-14 21:03:29,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067475634] [2020-10-14 21:03:29,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:03:29,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:03:29,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7425103] [2020-10-14 21:03:29,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:03:29,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:03:29,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:03:29,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:03:29,366 INFO L87 Difference]: Start difference. First operand 2582 states and 3227 transitions. Second operand 5 states. [2020-10-14 21:03:31,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:03:31,685 INFO L93 Difference]: Finished difference Result 5383 states and 6960 transitions. [2020-10-14 21:03:31,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:03:31,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 256 [2020-10-14 21:03:31,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:03:31,707 INFO L225 Difference]: With dead ends: 5383 [2020-10-14 21:03:31,707 INFO L226 Difference]: Without dead ends: 3185 [2020-10-14 21:03:31,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:03:31,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3185 states. [2020-10-14 21:03:31,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3185 to 3160. [2020-10-14 21:03:31,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3160 states. [2020-10-14 21:03:31,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3160 states to 3160 states and 3972 transitions. [2020-10-14 21:03:31,828 INFO L78 Accepts]: Start accepts. Automaton has 3160 states and 3972 transitions. Word has length 256 [2020-10-14 21:03:31,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:03:31,829 INFO L479 AbstractCegarLoop]: Abstraction has 3160 states and 3972 transitions. [2020-10-14 21:03:31,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:03:31,829 INFO L276 IsEmpty]: Start isEmpty. Operand 3160 states and 3972 transitions. [2020-10-14 21:03:31,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-14 21:03:31,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:03:31,835 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:03:31,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:03:31,836 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:03:31,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:03:31,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1568525659, now seen corresponding path program 1 times [2020-10-14 21:03:31,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:03:31,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673033429] [2020-10-14 21:03:31,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:03:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:31,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:32,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:32,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:33,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:34,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:36,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:36,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-14 21:03:36,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:03:36,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 21:03:36,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:36,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:36,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:03:36,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:03:36,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 21:03:36,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:36,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:03:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:36,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:36,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:36,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:03:36,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:36,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:03:36,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:36,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:36,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:03:36,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:36,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:03:36,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:03:37,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:03:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:37,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:37,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:37,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:37,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:03:37,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:03:37,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-10-14 21:03:37,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:37,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:37,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:37,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:03:37,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 21:03:37,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:37,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:03:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:37,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:37,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:37,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:03:37,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:37,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 21:03:37,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:37,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:37,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:03:37,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 21:03:37,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:03:37,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 98 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:03:37,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673033429] [2020-10-14 21:03:37,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:03:37,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:03:37,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130138285] [2020-10-14 21:03:37,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:03:37,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:03:37,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:03:37,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:03:37,966 INFO L87 Difference]: Start difference. First operand 3160 states and 3972 transitions. Second operand 7 states. [2020-10-14 21:03:40,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:03:40,174 INFO L93 Difference]: Finished difference Result 7504 states and 9775 transitions. [2020-10-14 21:03:40,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 21:03:40,174 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 267 [2020-10-14 21:03:40,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:03:40,199 INFO L225 Difference]: With dead ends: 7504 [2020-10-14 21:03:40,200 INFO L226 Difference]: Without dead ends: 4728 [2020-10-14 21:03:40,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:03:40,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4728 states. [2020-10-14 21:03:40,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4728 to 4330. [2020-10-14 21:03:40,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4330 states. [2020-10-14 21:03:40,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4330 states to 4330 states and 5379 transitions. [2020-10-14 21:03:40,329 INFO L78 Accepts]: Start accepts. Automaton has 4330 states and 5379 transitions. Word has length 267 [2020-10-14 21:03:40,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:03:40,329 INFO L479 AbstractCegarLoop]: Abstraction has 4330 states and 5379 transitions. [2020-10-14 21:03:40,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:03:40,330 INFO L276 IsEmpty]: Start isEmpty. Operand 4330 states and 5379 transitions. [2020-10-14 21:03:40,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-14 21:03:40,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:03:40,336 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:03:40,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:03:40,337 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:03:40,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:03:40,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1009314763, now seen corresponding path program 1 times [2020-10-14 21:03:40,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:03:40,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321359296] [2020-10-14 21:03:40,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:03:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:40,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:40,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:41,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:41,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-14 21:03:41,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:03:41,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1359 [2020-10-14 21:03:41,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:41,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:41,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:41,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 21:03:41,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 21:03:41,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:41,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:03:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:41,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:41,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:41,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:03:41,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:41,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:03:41,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:41,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:03:41,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:41,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:03:41,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:41,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:03:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:41,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:42,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:42,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:03:42,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:42,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 21:03:42,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:42,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:42,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:03:42,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:42,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:03:42,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:42,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:03:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:42,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:42,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:42,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 21:03:42,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:42,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 21:03:42,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:42,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:42,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:42,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:03:42,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 21:03:42,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:42,356 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:03:42,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321359296] [2020-10-14 21:03:42,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:03:42,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:03:42,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540915737] [2020-10-14 21:03:42,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:03:42,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:03:42,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:03:42,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:03:42,359 INFO L87 Difference]: Start difference. First operand 4330 states and 5379 transitions. Second operand 7 states. [2020-10-14 21:03:45,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:03:45,422 INFO L93 Difference]: Finished difference Result 10104 states and 13307 transitions. [2020-10-14 21:03:45,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:03:45,424 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 279 [2020-10-14 21:03:45,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:03:45,455 INFO L225 Difference]: With dead ends: 10104 [2020-10-14 21:03:45,455 INFO L226 Difference]: Without dead ends: 6158 [2020-10-14 21:03:45,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:03:45,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6158 states. [2020-10-14 21:03:45,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6158 to 6094. [2020-10-14 21:03:45,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6094 states. [2020-10-14 21:03:45,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6094 states to 6094 states and 7721 transitions. [2020-10-14 21:03:45,620 INFO L78 Accepts]: Start accepts. Automaton has 6094 states and 7721 transitions. Word has length 279 [2020-10-14 21:03:45,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:03:45,620 INFO L479 AbstractCegarLoop]: Abstraction has 6094 states and 7721 transitions. [2020-10-14 21:03:45,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:03:45,621 INFO L276 IsEmpty]: Start isEmpty. Operand 6094 states and 7721 transitions. [2020-10-14 21:03:45,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-14 21:03:45,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:03:45,628 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:03:45,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:03:45,628 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:03:45,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:03:45,629 INFO L82 PathProgramCache]: Analyzing trace with hash 236835424, now seen corresponding path program 1 times [2020-10-14 21:03:45,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:03:45,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330956881] [2020-10-14 21:03:45,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:03:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:45,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:46,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:46,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:46,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-14 21:03:46,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:03:46,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 747 [2020-10-14 21:03:46,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:46,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:46,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:46,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-14 21:03:46,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 21:03:46,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:46,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:03:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:46,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:46,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:46,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:03:46,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:46,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:03:46,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:46,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:46,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:03:46,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:46,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:03:46,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:46,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:03:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:46,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:46,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:46,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:03:46,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:46,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 21:03:46,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:46,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:03:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:46,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:03:46,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:46,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 21:03:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:46,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:46,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:46,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 21:03:46,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:46,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 21:03:46,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:46,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:46,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:03:46,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:46,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 21:03:46,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:46,904 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-14 21:03:46,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330956881] [2020-10-14 21:03:46,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:03:46,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:03:46,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70382118] [2020-10-14 21:03:46,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:03:46,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:03:46,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:03:46,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:03:46,912 INFO L87 Difference]: Start difference. First operand 6094 states and 7721 transitions. Second operand 5 states. [2020-10-14 21:03:48,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:03:48,994 INFO L93 Difference]: Finished difference Result 12978 states and 16509 transitions. [2020-10-14 21:03:48,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:03:48,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 283 [2020-10-14 21:03:48,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:03:49,025 INFO L225 Difference]: With dead ends: 12978 [2020-10-14 21:03:49,026 INFO L226 Difference]: Without dead ends: 7268 [2020-10-14 21:03:49,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:03:49,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7268 states. [2020-10-14 21:03:49,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7268 to 7060. [2020-10-14 21:03:49,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7060 states. [2020-10-14 21:03:49,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7060 states to 7060 states and 8806 transitions. [2020-10-14 21:03:49,206 INFO L78 Accepts]: Start accepts. Automaton has 7060 states and 8806 transitions. Word has length 283 [2020-10-14 21:03:49,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:03:49,207 INFO L479 AbstractCegarLoop]: Abstraction has 7060 states and 8806 transitions. [2020-10-14 21:03:49,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:03:49,207 INFO L276 IsEmpty]: Start isEmpty. Operand 7060 states and 8806 transitions. [2020-10-14 21:03:49,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-14 21:03:49,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:03:49,216 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:03:49,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:03:49,217 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:03:49,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:03:49,217 INFO L82 PathProgramCache]: Analyzing trace with hash -476872594, now seen corresponding path program 1 times [2020-10-14 21:03:49,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:03:49,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821271857] [2020-10-14 21:03:49,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:03:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:49,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:49,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:50,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:50,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:51,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:51,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-14 21:03:51,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:03:51,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1988 [2020-10-14 21:03:51,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:51,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:51,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:03:51,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-14 21:03:51,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 21:03:51,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:51,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:03:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:51,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:51,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:51,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:03:51,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:51,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:03:51,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:51,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:51,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:03:51,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:51,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:03:51,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:51,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:03:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:51,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:51,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:51,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 21:03:51,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:51,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-14 21:03:51,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:51,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:51,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:03:51,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:51,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 21:03:51,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:51,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 21:03:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:51,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:51,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:51,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:51,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:03:51,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:03:51,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-14 21:03:51,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:51,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:51,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:51,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:03:51,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:03:51,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:52,046 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 124 proven. 49 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:03:52,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821271857] [2020-10-14 21:03:52,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:03:52,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:03:52,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104010378] [2020-10-14 21:03:52,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:03:52,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:03:52,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:03:52,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:03:52,050 INFO L87 Difference]: Start difference. First operand 7060 states and 8806 transitions. Second operand 7 states. [2020-10-14 21:03:55,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:03:55,044 INFO L93 Difference]: Finished difference Result 15199 states and 19514 transitions. [2020-10-14 21:03:55,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:03:55,045 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 283 [2020-10-14 21:03:55,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:03:55,082 INFO L225 Difference]: With dead ends: 15199 [2020-10-14 21:03:55,082 INFO L226 Difference]: Without dead ends: 8523 [2020-10-14 21:03:55,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:03:55,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8523 states. [2020-10-14 21:03:55,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8523 to 8416. [2020-10-14 21:03:55,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8416 states. [2020-10-14 21:03:55,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8416 states to 8416 states and 10372 transitions. [2020-10-14 21:03:55,324 INFO L78 Accepts]: Start accepts. Automaton has 8416 states and 10372 transitions. Word has length 283 [2020-10-14 21:03:55,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:03:55,325 INFO L479 AbstractCegarLoop]: Abstraction has 8416 states and 10372 transitions. [2020-10-14 21:03:55,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:03:55,325 INFO L276 IsEmpty]: Start isEmpty. Operand 8416 states and 10372 transitions. [2020-10-14 21:03:55,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-14 21:03:55,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:03:55,336 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:03:55,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:03:55,336 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:03:55,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:03:55,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1496764956, now seen corresponding path program 1 times [2020-10-14 21:03:55,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:03:55,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636746818] [2020-10-14 21:03:55,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:03:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:55,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:55,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:56,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:56,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-14 21:03:56,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:03:56,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1592 [2020-10-14 21:03:56,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:56,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:56,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 21:03:56,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:03:56,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 298 [2020-10-14 21:03:56,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:57,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:03:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:57,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:57,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:57,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:03:57,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:57,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:03:57,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:57,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:57,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:03:57,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:57,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:03:57,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:57,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:03:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:57,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:57,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:57,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:03:57,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:57,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-14 21:03:57,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:57,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:57,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:03:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 21:03:57,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:57,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 21:03:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:57,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:57,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:57,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:03:57,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:57,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-14 21:03:57,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:57,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:57,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:03:57,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:03:57,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:03:57,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:58,499 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 103 proven. 101 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:03:58,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636746818] [2020-10-14 21:03:58,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:03:58,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:03:58,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956976594] [2020-10-14 21:03:58,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 21:03:58,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:03:58,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 21:03:58,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 21:03:58,503 INFO L87 Difference]: Start difference. First operand 8416 states and 10372 transitions. Second operand 9 states. [2020-10-14 21:04:02,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:04:02,419 INFO L93 Difference]: Finished difference Result 16932 states and 21068 transitions. [2020-10-14 21:04:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:04:02,420 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 292 [2020-10-14 21:04:02,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:04:02,454 INFO L225 Difference]: With dead ends: 16932 [2020-10-14 21:04:02,454 INFO L226 Difference]: Without dead ends: 11022 [2020-10-14 21:04:02,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-14 21:04:02,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11022 states. [2020-10-14 21:04:02,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11022 to 8442. [2020-10-14 21:04:02,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8442 states. [2020-10-14 21:04:02,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8442 states to 8442 states and 10436 transitions. [2020-10-14 21:04:02,654 INFO L78 Accepts]: Start accepts. Automaton has 8442 states and 10436 transitions. Word has length 292 [2020-10-14 21:04:02,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:04:02,655 INFO L479 AbstractCegarLoop]: Abstraction has 8442 states and 10436 transitions. [2020-10-14 21:04:02,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 21:04:02,655 INFO L276 IsEmpty]: Start isEmpty. Operand 8442 states and 10436 transitions. [2020-10-14 21:04:02,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-14 21:04:02,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:04:02,664 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:04:02,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 21:04:02,664 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:04:02,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:04:02,665 INFO L82 PathProgramCache]: Analyzing trace with hash -92313360, now seen corresponding path program 1 times [2020-10-14 21:04:02,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:04:02,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504808446] [2020-10-14 21:04:02,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:04:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:02,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:03,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:03,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:03,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:03,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-14 21:04:03,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:04:03,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1183 [2020-10-14 21:04:03,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:03,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:03,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:04:03,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 21:04:03,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-14 21:04:03,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:04:04,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:04:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:04,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:04,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:04,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:04:04,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:04,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:04:04,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:04,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:04,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:04:04,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:04:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:04,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:04,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:04,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:04:04,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:04,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 21:04:04,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:04,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:04,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:04:04,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:04,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:04:04,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:04:04,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:04:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:04,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:04,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:04,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 21:04:04,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:04,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 21:04:04,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:04,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:04,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:04,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:04,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 21:04:04,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:04:04,510 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 151 proven. 49 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:04:04,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504808446] [2020-10-14 21:04:04,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:04:04,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:04:04,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088701384] [2020-10-14 21:04:04,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:04:04,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:04:04,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:04:04,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:04:04,513 INFO L87 Difference]: Start difference. First operand 8442 states and 10436 transitions. Second operand 6 states. [2020-10-14 21:04:06,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:04:06,622 INFO L93 Difference]: Finished difference Result 17008 states and 21413 transitions. [2020-10-14 21:04:06,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:04:06,623 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 294 [2020-10-14 21:04:06,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:04:06,652 INFO L225 Difference]: With dead ends: 17008 [2020-10-14 21:04:06,652 INFO L226 Difference]: Without dead ends: 8572 [2020-10-14 21:04:06,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:04:06,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8572 states. [2020-10-14 21:04:06,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8572 to 8442. [2020-10-14 21:04:06,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8442 states. [2020-10-14 21:04:06,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8442 states to 8442 states and 10022 transitions. [2020-10-14 21:04:06,829 INFO L78 Accepts]: Start accepts. Automaton has 8442 states and 10022 transitions. Word has length 294 [2020-10-14 21:04:06,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:04:06,830 INFO L479 AbstractCegarLoop]: Abstraction has 8442 states and 10022 transitions. [2020-10-14 21:04:06,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:04:06,830 INFO L276 IsEmpty]: Start isEmpty. Operand 8442 states and 10022 transitions. [2020-10-14 21:04:06,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-14 21:04:06,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:04:06,842 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:04:06,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 21:04:06,843 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:04:06,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:04:06,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1206013440, now seen corresponding path program 1 times [2020-10-14 21:04:06,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:04:06,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782809458] [2020-10-14 21:04:06,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:04:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:06,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:07,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:07,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-14 21:04:07,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:07,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-14 21:04:07,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:07,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:07,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:07,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 21:04:07,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:04:07,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:07,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:04:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:07,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:07,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:07,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:04:07,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:07,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:04:07,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:07,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:07,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:07,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:07,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:07,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:07,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:04:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:07,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:07,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:07,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:04:07,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:07,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 21:04:07,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:07,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:07,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:04:07,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:07,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:04:07,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:04:07,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:04:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:07,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:07,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:07,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:04:07,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:07,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 21:04:07,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:07,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:07,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:07,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:07,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:04:07,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:07,856 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:04:07,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782809458] [2020-10-14 21:04:07,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:04:07,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:04:07,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372687911] [2020-10-14 21:04:07,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:04:07,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:04:07,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:04:07,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:04:07,859 INFO L87 Difference]: Start difference. First operand 8442 states and 10022 transitions. Second operand 7 states. [2020-10-14 21:04:11,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:04:11,429 INFO L93 Difference]: Finished difference Result 18481 states and 22072 transitions. [2020-10-14 21:04:11,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:04:11,430 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 297 [2020-10-14 21:04:11,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:04:11,459 INFO L225 Difference]: With dead ends: 18481 [2020-10-14 21:04:11,459 INFO L226 Difference]: Without dead ends: 10045 [2020-10-14 21:04:11,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:04:11,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10045 states. [2020-10-14 21:04:11,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10045 to 9814. [2020-10-14 21:04:11,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9814 states. [2020-10-14 21:04:11,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9814 states to 9814 states and 11640 transitions. [2020-10-14 21:04:11,638 INFO L78 Accepts]: Start accepts. Automaton has 9814 states and 11640 transitions. Word has length 297 [2020-10-14 21:04:11,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:04:11,639 INFO L479 AbstractCegarLoop]: Abstraction has 9814 states and 11640 transitions. [2020-10-14 21:04:11,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:04:11,639 INFO L276 IsEmpty]: Start isEmpty. Operand 9814 states and 11640 transitions. [2020-10-14 21:04:11,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-14 21:04:11,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:04:11,649 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:04:11,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 21:04:11,649 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:04:11,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:04:11,650 INFO L82 PathProgramCache]: Analyzing trace with hash -345108890, now seen corresponding path program 1 times [2020-10-14 21:04:11,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:04:11,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714507440] [2020-10-14 21:04:11,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:04:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:11,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:11,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:12,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:12,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-14 21:04:12,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:04:12,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1199 [2020-10-14 21:04:12,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:12,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:12,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:12,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 21:04:12,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 21:04:12,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:12,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:04:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:12,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:12,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:12,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:04:12,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:12,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:04:12,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:12,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:12,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:12,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:12,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:12,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:13,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:04:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:13,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:13,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:13,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:04:13,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:13,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 21:04:13,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:13,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:13,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:04:13,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:13,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:04:13,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:13,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:04:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:13,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:13,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:13,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 21:04:13,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:13,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 21:04:13,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:13,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:13,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:13,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:13,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:04:13,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:04:13,406 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:04:13,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714507440] [2020-10-14 21:04:13,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:04:13,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:04:13,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656307997] [2020-10-14 21:04:13,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:04:13,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:04:13,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:04:13,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:04:13,408 INFO L87 Difference]: Start difference. First operand 9814 states and 11640 transitions. Second operand 7 states. [2020-10-14 21:04:16,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:04:16,793 INFO L93 Difference]: Finished difference Result 19422 states and 23001 transitions. [2020-10-14 21:04:16,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:04:16,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 300 [2020-10-14 21:04:16,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:04:16,837 INFO L225 Difference]: With dead ends: 19422 [2020-10-14 21:04:16,838 INFO L226 Difference]: Without dead ends: 9614 [2020-10-14 21:04:16,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:04:16,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9614 states. [2020-10-14 21:04:17,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9614 to 9200. [2020-10-14 21:04:17,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9200 states. [2020-10-14 21:04:17,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9200 states to 9200 states and 10692 transitions. [2020-10-14 21:04:17,091 INFO L78 Accepts]: Start accepts. Automaton has 9200 states and 10692 transitions. Word has length 300 [2020-10-14 21:04:17,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:04:17,091 INFO L479 AbstractCegarLoop]: Abstraction has 9200 states and 10692 transitions. [2020-10-14 21:04:17,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:04:17,092 INFO L276 IsEmpty]: Start isEmpty. Operand 9200 states and 10692 transitions. [2020-10-14 21:04:17,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-14 21:04:17,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:04:17,104 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:04:17,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 21:04:17,105 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:04:17,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:04:17,105 INFO L82 PathProgramCache]: Analyzing trace with hash 981290573, now seen corresponding path program 1 times [2020-10-14 21:04:17,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:04:17,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607121311] [2020-10-14 21:04:17,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:04:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:17,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:17,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:17,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:18,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:18,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-14 21:04:18,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:04:18,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1579 [2020-10-14 21:04:18,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:18,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:18,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 21:04:18,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:04:18,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 332 [2020-10-14 21:04:18,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:18,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:04:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:18,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:18,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:18,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:04:18,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:18,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:04:18,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:18,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:04:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:04:18,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:18,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:04:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:18,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:19,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:19,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:04:19,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:19,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 21:04:19,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:19,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:19,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:04:19,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:19,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 21:04:19,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:19,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:04:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:19,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:19,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:19,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 21:04:19,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:19,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 21:04:19,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:19,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:19,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:19,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:19,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:04:19,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:19,395 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 6 proven. 216 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:04:19,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607121311] [2020-10-14 21:04:19,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:04:19,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:04:19,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560688092] [2020-10-14 21:04:19,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 21:04:19,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:04:19,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 21:04:19,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-14 21:04:19,397 INFO L87 Difference]: Start difference. First operand 9200 states and 10692 transitions. Second operand 9 states. [2020-10-14 21:04:23,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:04:23,528 INFO L93 Difference]: Finished difference Result 28238 states and 34101 transitions. [2020-10-14 21:04:23,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 21:04:23,529 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 326 [2020-10-14 21:04:23,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:04:23,576 INFO L225 Difference]: With dead ends: 28238 [2020-10-14 21:04:23,576 INFO L226 Difference]: Without dead ends: 19044 [2020-10-14 21:04:23,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-14 21:04:23,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19044 states. [2020-10-14 21:04:24,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19044 to 18042. [2020-10-14 21:04:24,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18042 states. [2020-10-14 21:04:24,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18042 states to 18042 states and 21027 transitions. [2020-10-14 21:04:24,063 INFO L78 Accepts]: Start accepts. Automaton has 18042 states and 21027 transitions. Word has length 326 [2020-10-14 21:04:24,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:04:24,064 INFO L479 AbstractCegarLoop]: Abstraction has 18042 states and 21027 transitions. [2020-10-14 21:04:24,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 21:04:24,064 INFO L276 IsEmpty]: Start isEmpty. Operand 18042 states and 21027 transitions. [2020-10-14 21:04:24,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-14 21:04:24,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:04:24,081 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 21:04:24,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 21:04:24,081 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:04:24,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:04:24,082 INFO L82 PathProgramCache]: Analyzing trace with hash -666339662, now seen corresponding path program 1 times [2020-10-14 21:04:24,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:04:24,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87067614] [2020-10-14 21:04:24,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:04:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:24,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:24,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:25,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:25,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:26,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:27,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:28,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:28,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-14 21:04:28,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 21:04:28,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4834 [2020-10-14 21:04:28,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:28,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:28,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 21:04:28,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:04:28,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-14 21:04:28,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:29,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:04:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:29,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:29,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:29,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:04:29,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:29,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:04:29,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:29,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:04:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:04:29,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:29,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:04:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:29,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:29,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:29,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:04:29,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:29,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 21:04:29,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:29,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:29,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:29,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:29,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 21:04:29,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:29,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 21:04:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:29,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:29,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:29,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:04:29,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:29,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 21:04:29,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:29,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:29,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:04:29,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:29,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:04:29,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:29,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-14 21:04:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:29,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:29,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:29,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:04:29,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:29,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 21:04:29,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:29,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:29,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:29,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:29,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:04:29,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:29,694 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 149 proven. 13 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2020-10-14 21:04:29,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87067614] [2020-10-14 21:04:29,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:04:29,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:04:29,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573773441] [2020-10-14 21:04:29,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 21:04:29,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:04:29,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 21:04:29,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-14 21:04:29,696 INFO L87 Difference]: Start difference. First operand 18042 states and 21027 transitions. Second operand 9 states. [2020-10-14 21:04:33,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:04:33,819 INFO L93 Difference]: Finished difference Result 39255 states and 46265 transitions. [2020-10-14 21:04:33,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 21:04:33,820 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 356 [2020-10-14 21:04:33,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:04:33,878 INFO L225 Difference]: With dead ends: 39255 [2020-10-14 21:04:33,879 INFO L226 Difference]: Without dead ends: 23907 [2020-10-14 21:04:33,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-10-14 21:04:33,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23907 states. [2020-10-14 21:04:34,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23907 to 23091. [2020-10-14 21:04:34,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23091 states. [2020-10-14 21:04:34,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23091 states to 23091 states and 27146 transitions. [2020-10-14 21:04:34,312 INFO L78 Accepts]: Start accepts. Automaton has 23091 states and 27146 transitions. Word has length 356 [2020-10-14 21:04:34,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:04:34,312 INFO L479 AbstractCegarLoop]: Abstraction has 23091 states and 27146 transitions. [2020-10-14 21:04:34,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 21:04:34,313 INFO L276 IsEmpty]: Start isEmpty. Operand 23091 states and 27146 transitions. [2020-10-14 21:04:34,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-14 21:04:34,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:04:34,331 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 21:04:34,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 21:04:34,331 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:04:34,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:04:34,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1482572138, now seen corresponding path program 1 times [2020-10-14 21:04:34,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:04:34,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025090155] [2020-10-14 21:04:34,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:04:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:34,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:34,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:34,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-14 21:04:34,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:34,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-14 21:04:34,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:34,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:34,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:34,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-14 21:04:34,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 21:04:34,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:34,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:04:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:34,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:34,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:34,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:04:34,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:34,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:04:34,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:34,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:34,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:34,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:34,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:34,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:34,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:04:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:34,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:34,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:34,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:04:34,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:34,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 21:04:34,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:34,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:34,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:34,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:34,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:34,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:34,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 21:04:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:34,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:34,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:34,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:04:34,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:34,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 21:04:34,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:34,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:34,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:34,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:34,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:34,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:34,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 21:04:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:35,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:35,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:35,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 21:04:35,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:35,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 21:04:35,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:35,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:35,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:04:35,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:35,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:04:35,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:35,245 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 150 proven. 3 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2020-10-14 21:04:35,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025090155] [2020-10-14 21:04:35,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:04:35,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:04:35,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362227291] [2020-10-14 21:04:35,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:04:35,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:04:35,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:04:35,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:04:35,247 INFO L87 Difference]: Start difference. First operand 23091 states and 27146 transitions. Second operand 5 states. [2020-10-14 21:04:37,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:04:37,949 INFO L93 Difference]: Finished difference Result 28190 states and 33062 transitions. [2020-10-14 21:04:37,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:04:37,950 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 360 [2020-10-14 21:04:37,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:04:38,015 INFO L225 Difference]: With dead ends: 28190 [2020-10-14 21:04:38,015 INFO L226 Difference]: Without dead ends: 28188 [2020-10-14 21:04:38,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:04:38,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28188 states. [2020-10-14 21:04:38,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28188 to 28109. [2020-10-14 21:04:38,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28109 states. [2020-10-14 21:04:38,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28109 states to 28109 states and 32981 transitions. [2020-10-14 21:04:38,512 INFO L78 Accepts]: Start accepts. Automaton has 28109 states and 32981 transitions. Word has length 360 [2020-10-14 21:04:38,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:04:38,513 INFO L479 AbstractCegarLoop]: Abstraction has 28109 states and 32981 transitions. [2020-10-14 21:04:38,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:04:38,513 INFO L276 IsEmpty]: Start isEmpty. Operand 28109 states and 32981 transitions. [2020-10-14 21:04:38,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-14 21:04:38,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:04:38,526 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:04:38,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 21:04:38,526 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:04:38,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:04:38,527 INFO L82 PathProgramCache]: Analyzing trace with hash 16600132, now seen corresponding path program 1 times [2020-10-14 21:04:38,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:04:38,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504582632] [2020-10-14 21:04:38,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:04:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:38,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:38,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:38,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:39,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:42,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:42,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 379 [2020-10-14 21:04:42,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:04:42,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3985 [2020-10-14 21:04:42,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:42,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:42,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 21:04:42,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:04:42,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-10-14 21:04:42,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:42,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:04:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:42,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:42,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:42,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:04:42,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:42,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:04:42,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:42,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:42,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:04:42,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:42,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:04:42,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:42,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:04:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:42,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:42,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:42,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:04:42,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:42,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 21:04:42,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:42,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:42,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:42,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:42,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 21:04:42,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:42,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 21:04:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:42,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:43,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:43,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:04:43,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:43,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 21:04:43,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:43,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:04:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:04:43,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:43,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-14 21:04:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:43,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:43,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:43,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:43,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:04:43,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:04:43,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-14 21:04:43,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:43,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:43,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:43,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:43,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:04:43,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:44,071 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 155 proven. 242 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 21:04:44,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504582632] [2020-10-14 21:04:44,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:04:44,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 21:04:44,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628530775] [2020-10-14 21:04:44,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 21:04:44,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:04:44,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 21:04:44,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:04:44,073 INFO L87 Difference]: Start difference. First operand 28109 states and 32981 transitions. Second operand 10 states. [2020-10-14 21:04:45,681 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-10-14 21:04:46,452 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-10-14 21:04:48,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:04:48,041 INFO L93 Difference]: Finished difference Result 48990 states and 57554 transitions. [2020-10-14 21:04:48,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 21:04:48,042 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 365 [2020-10-14 21:04:48,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:04:48,105 INFO L225 Difference]: With dead ends: 48990 [2020-10-14 21:04:48,105 INFO L226 Difference]: Without dead ends: 28189 [2020-10-14 21:04:48,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-14 21:04:48,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28189 states. [2020-10-14 21:04:48,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28189 to 27915. [2020-10-14 21:04:48,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27915 states. [2020-10-14 21:04:48,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27915 states to 27915 states and 32746 transitions. [2020-10-14 21:04:48,531 INFO L78 Accepts]: Start accepts. Automaton has 27915 states and 32746 transitions. Word has length 365 [2020-10-14 21:04:48,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:04:48,531 INFO L479 AbstractCegarLoop]: Abstraction has 27915 states and 32746 transitions. [2020-10-14 21:04:48,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 21:04:48,532 INFO L276 IsEmpty]: Start isEmpty. Operand 27915 states and 32746 transitions. [2020-10-14 21:04:48,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-14 21:04:48,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:04:48,541 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:04:48,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 21:04:48,542 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:04:48,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:04:48,542 INFO L82 PathProgramCache]: Analyzing trace with hash -262177717, now seen corresponding path program 1 times [2020-10-14 21:04:48,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:04:48,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863663670] [2020-10-14 21:04:48,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:04:48,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:48,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:48,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:49,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:49,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:51,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:51,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-14 21:04:51,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:04:51,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2550 [2020-10-14 21:04:51,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:51,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:51,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:51,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 21:04:51,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 21:04:51,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:51,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:04:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:51,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:51,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:51,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:04:51,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:51,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:04:51,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:51,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:51,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:51,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:51,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:51,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:51,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:04:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:51,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:51,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:51,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:04:51,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:51,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 21:04:51,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:51,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:04:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:04:51,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:51,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 21:04:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:51,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:51,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:51,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:04:51,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:51,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 21:04:51,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:51,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:51,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:51,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:51,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:04:51,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:51,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-14 21:04:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:51,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:51,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:51,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:04:51,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:51,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 21:04:51,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:51,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:51,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:51,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 21:04:51,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:51,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:51,611 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 258 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-14 21:04:51,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863663670] [2020-10-14 21:04:51,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:04:51,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:04:51,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2374427] [2020-10-14 21:04:51,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:04:51,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:04:51,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:04:51,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:04:51,613 INFO L87 Difference]: Start difference. First operand 27915 states and 32746 transitions. Second operand 7 states. [2020-10-14 21:04:55,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:04:55,580 INFO L93 Difference]: Finished difference Result 58967 states and 69098 transitions. [2020-10-14 21:04:55,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:04:55,581 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 372 [2020-10-14 21:04:55,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:04:55,654 INFO L225 Difference]: With dead ends: 58967 [2020-10-14 21:04:55,654 INFO L226 Difference]: Without dead ends: 31436 [2020-10-14 21:04:55,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:04:55,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31436 states. [2020-10-14 21:04:56,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31436 to 28287. [2020-10-14 21:04:56,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28287 states. [2020-10-14 21:04:56,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28287 states to 28287 states and 33084 transitions. [2020-10-14 21:04:56,149 INFO L78 Accepts]: Start accepts. Automaton has 28287 states and 33084 transitions. Word has length 372 [2020-10-14 21:04:56,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:04:56,150 INFO L479 AbstractCegarLoop]: Abstraction has 28287 states and 33084 transitions. [2020-10-14 21:04:56,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:04:56,150 INFO L276 IsEmpty]: Start isEmpty. Operand 28287 states and 33084 transitions. [2020-10-14 21:04:56,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-10-14 21:04:56,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:04:56,163 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 21:04:56,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 21:04:56,163 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:04:56,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:04:56,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1736606564, now seen corresponding path program 1 times [2020-10-14 21:04:56,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:04:56,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380822697] [2020-10-14 21:04:56,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:04:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:56,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:56,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:56,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:56,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:58,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:58,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 402 [2020-10-14 21:04:58,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:04:58,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2052 [2020-10-14 21:04:58,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:58,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:58,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 21:04:58,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:04:58,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 396 [2020-10-14 21:04:58,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:58,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:04:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:58,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:58,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:58,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:04:58,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:58,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:04:58,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:58,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:58,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:04:58,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:58,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:04:58,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:58,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:04:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:58,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:58,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:58,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:04:58,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:58,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 21:04:58,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:58,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:04:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 21:04:58,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:58,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:04:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:58,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:58,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:58,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 21:04:58,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:58,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 21:04:58,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:58,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:58,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:58,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:58,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 21:04:58,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:58,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-14 21:04:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:58,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:58,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:58,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:04:58,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:58,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-14 21:04:58,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:58,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:58,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:04:58,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:58,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:04:58,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:04:59,383 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 0 proven. 348 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-14 21:04:59,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380822697] [2020-10-14 21:04:59,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:04:59,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 21:04:59,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007155398] [2020-10-14 21:04:59,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 21:04:59,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:04:59,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 21:04:59,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:04:59,385 INFO L87 Difference]: Start difference. First operand 28287 states and 33084 transitions. Second operand 11 states. [2020-10-14 21:05:07,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:05:07,161 INFO L93 Difference]: Finished difference Result 36315 states and 43537 transitions. [2020-10-14 21:05:07,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 21:05:07,162 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 388 [2020-10-14 21:05:07,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:05:07,224 INFO L225 Difference]: With dead ends: 36315 [2020-10-14 21:05:07,224 INFO L226 Difference]: Without dead ends: 36313 [2020-10-14 21:05:07,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2020-10-14 21:05:07,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36313 states. [2020-10-14 21:05:07,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36313 to 33546. [2020-10-14 21:05:07,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33546 states. [2020-10-14 21:05:07,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33546 states to 33546 states and 39272 transitions. [2020-10-14 21:05:07,886 INFO L78 Accepts]: Start accepts. Automaton has 33546 states and 39272 transitions. Word has length 388 [2020-10-14 21:05:07,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:05:07,887 INFO L479 AbstractCegarLoop]: Abstraction has 33546 states and 39272 transitions. [2020-10-14 21:05:07,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 21:05:07,888 INFO L276 IsEmpty]: Start isEmpty. Operand 33546 states and 39272 transitions. [2020-10-14 21:05:07,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-14 21:05:07,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:05:07,908 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 21:05:07,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 21:05:07,913 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:05:07,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:05:07,914 INFO L82 PathProgramCache]: Analyzing trace with hash 416392556, now seen corresponding path program 1 times [2020-10-14 21:05:07,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:05:07,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419488027] [2020-10-14 21:05:07,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:05:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:08,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:08,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:09,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:09,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:11,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:11,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-14 21:05:11,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:05:11,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3539 [2020-10-14 21:05:11,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:11,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:11,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 21:05:11,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:05:11,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 401 [2020-10-14 21:05:11,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:11,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:05:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:11,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:11,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:11,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:05:11,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:11,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:05:11,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:11,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:11,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:05:11,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:11,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:05:11,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:05:11,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:05:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:11,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:11,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:12,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:12,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:05:12,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:05:12,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-14 21:05:12,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:12,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:12,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:05:12,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:12,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:05:12,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:05:12,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 21:05:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:12,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:12,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:12,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:12,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 21:05:12,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:05:12,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-14 21:05:12,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:12,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:12,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:05:12,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:12,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 21:05:12,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:05:12,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-14 21:05:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:12,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:12,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:12,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:05:12,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:12,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-14 21:05:12,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:12,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:12,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:05:12,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:05:12,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:05:12,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:05:12,968 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 287 proven. 63 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-14 21:05:12,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419488027] [2020-10-14 21:05:12,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:05:12,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:05:12,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282148862] [2020-10-14 21:05:12,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:05:12,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:05:12,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:05:12,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:05:12,975 INFO L87 Difference]: Start difference. First operand 33546 states and 39272 transitions. Second operand 8 states. [2020-10-14 21:05:16,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:05:16,850 INFO L93 Difference]: Finished difference Result 43267 states and 51131 transitions. [2020-10-14 21:05:16,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:05:16,851 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 393 [2020-10-14 21:05:16,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:05:16,919 INFO L225 Difference]: With dead ends: 43267 [2020-10-14 21:05:16,919 INFO L226 Difference]: Without dead ends: 43265 [2020-10-14 21:05:16,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-14 21:05:16,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43265 states. [2020-10-14 21:05:17,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43265 to 39380. [2020-10-14 21:05:17,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39380 states. [2020-10-14 21:05:17,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39380 states to 39380 states and 45927 transitions. [2020-10-14 21:05:17,518 INFO L78 Accepts]: Start accepts. Automaton has 39380 states and 45927 transitions. Word has length 393 [2020-10-14 21:05:17,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:05:17,519 INFO L479 AbstractCegarLoop]: Abstraction has 39380 states and 45927 transitions. [2020-10-14 21:05:17,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:05:17,519 INFO L276 IsEmpty]: Start isEmpty. Operand 39380 states and 45927 transitions. [2020-10-14 21:05:17,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-14 21:05:17,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:05:17,531 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:05:17,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 21:05:17,532 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:05:17,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:05:17,532 INFO L82 PathProgramCache]: Analyzing trace with hash -609159878, now seen corresponding path program 1 times [2020-10-14 21:05:17,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:05:17,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832155792] [2020-10-14 21:05:17,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:05:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:17,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:17,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:18,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:18,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:20,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:20,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-14 21:05:20,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:05:20,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2773 [2020-10-14 21:05:20,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:20,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:20,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:05:20,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-14 21:05:20,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 21:05:20,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:20,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:05:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:20,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:20,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:20,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:05:20,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:20,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:05:20,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:20,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:20,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:20,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:20,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:20,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:20,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:05:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:20,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:21,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:21,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 21:05:21,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:21,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 21:05:21,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:21,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:21,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:05:21,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:21,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 21:05:21,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:21,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 21:05:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:21,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:21,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:21,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:05:21,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:21,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-14 21:05:21,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:21,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:21,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:05:21,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:05:21,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:05:21,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:21,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-14 21:05:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:21,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:21,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:21,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:05:21,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:21,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 21:05:21,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:21,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:21,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:21,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 21:05:21,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:21,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:21,549 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 258 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-14 21:05:21,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832155792] [2020-10-14 21:05:21,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:05:21,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:05:21,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208221537] [2020-10-14 21:05:21,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:05:21,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:05:21,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:05:21,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:05:21,551 INFO L87 Difference]: Start difference. First operand 39380 states and 45927 transitions. Second operand 7 states. [2020-10-14 21:05:24,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:05:24,910 INFO L93 Difference]: Finished difference Result 76310 states and 88618 transitions. [2020-10-14 21:05:24,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:05:24,913 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 393 [2020-10-14 21:05:24,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:05:24,984 INFO L225 Difference]: With dead ends: 76310 [2020-10-14 21:05:24,984 INFO L226 Difference]: Without dead ends: 44903 [2020-10-14 21:05:25,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:05:25,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44903 states. [2020-10-14 21:05:25,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44903 to 42436. [2020-10-14 21:05:25,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42436 states. [2020-10-14 21:05:25,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42436 states to 42436 states and 49293 transitions. [2020-10-14 21:05:25,581 INFO L78 Accepts]: Start accepts. Automaton has 42436 states and 49293 transitions. Word has length 393 [2020-10-14 21:05:25,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:05:25,581 INFO L479 AbstractCegarLoop]: Abstraction has 42436 states and 49293 transitions. [2020-10-14 21:05:25,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:05:25,581 INFO L276 IsEmpty]: Start isEmpty. Operand 42436 states and 49293 transitions. [2020-10-14 21:05:25,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-10-14 21:05:25,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:05:25,591 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:05:25,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 21:05:25,591 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:05:25,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:05:25,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1465046263, now seen corresponding path program 1 times [2020-10-14 21:05:25,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:05:25,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192558522] [2020-10-14 21:05:25,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:05:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:25,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:25,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:26,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:27,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:28,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:29,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:29,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 437 [2020-10-14 21:05:29,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:05:29,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3509 [2020-10-14 21:05:29,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:29,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:29,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:05:29,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 21:05:29,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-14 21:05:29,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:29,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:05:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:29,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:29,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:29,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:05:29,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:29,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:05:29,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:29,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:29,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:29,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:29,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:29,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:29,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:05:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:29,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:29,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:29,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:05:29,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:29,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 21:05:29,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:29,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:29,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:05:29,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:29,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:05:29,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:29,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:05:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:29,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:29,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:29,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 21:05:29,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:29,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 21:05:29,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:29,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:29,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:05:29,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:05:29,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-14 21:05:29,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:29,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-14 21:05:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:29,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:29,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:29,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:05:29,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:29,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 21:05:29,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:29,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:29,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:29,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 21:05:29,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:29,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:29,925 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 264 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-14 21:05:29,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192558522] [2020-10-14 21:05:29,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:05:29,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:05:29,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835234887] [2020-10-14 21:05:29,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:05:29,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:05:29,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:05:29,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:05:29,927 INFO L87 Difference]: Start difference. First operand 42436 states and 49293 transitions. Second operand 7 states. [2020-10-14 21:05:34,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:05:34,281 INFO L93 Difference]: Finished difference Result 88104 states and 103111 transitions. [2020-10-14 21:05:34,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:05:34,283 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 423 [2020-10-14 21:05:34,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:05:34,363 INFO L225 Difference]: With dead ends: 88104 [2020-10-14 21:05:34,363 INFO L226 Difference]: Without dead ends: 46052 [2020-10-14 21:05:34,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:05:34,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46052 states. [2020-10-14 21:05:34,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46052 to 45882. [2020-10-14 21:05:34,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45882 states. [2020-10-14 21:05:35,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45882 states to 45882 states and 53612 transitions. [2020-10-14 21:05:35,069 INFO L78 Accepts]: Start accepts. Automaton has 45882 states and 53612 transitions. Word has length 423 [2020-10-14 21:05:35,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:05:35,070 INFO L479 AbstractCegarLoop]: Abstraction has 45882 states and 53612 transitions. [2020-10-14 21:05:35,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:05:35,070 INFO L276 IsEmpty]: Start isEmpty. Operand 45882 states and 53612 transitions. [2020-10-14 21:05:35,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2020-10-14 21:05:35,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:05:35,083 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:05:35,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 21:05:35,083 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:05:35,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:05:35,084 INFO L82 PathProgramCache]: Analyzing trace with hash -46906353, now seen corresponding path program 1 times [2020-10-14 21:05:35,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:05:35,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873543228] [2020-10-14 21:05:35,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:05:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:35,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:35,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:35,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:35,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:35,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:35,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:36,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:36,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:36,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 440 [2020-10-14 21:05:36,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 21:05:36,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1140 [2020-10-14 21:05:36,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:36,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:36,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:05:36,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:05:36,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-14 21:05:36,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:36,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:05:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:36,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:36,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:36,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:05:36,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:36,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:05:36,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:36,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:36,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:05:36,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:36,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:05:36,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:36,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:05:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:36,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:36,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:36,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:36,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:05:36,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:05:36,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 21:05:36,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:36,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:36,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:05:36,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:36,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 21:05:36,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:36,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:05:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:36,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:36,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:36,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:36,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 21:05:36,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:05:36,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 21:05:36,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:36,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:36,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:05:36,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 21:05:36,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 21:05:36,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:36,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-14 21:05:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:36,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:36,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:36,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:05:36,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:36,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 21:05:36,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:36,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:36,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:36,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 21:05:36,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:36,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:37,003 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2020-10-14 21:05:37,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873543228] [2020-10-14 21:05:37,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:05:37,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:05:37,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873241375] [2020-10-14 21:05:37,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:05:37,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:05:37,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:05:37,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:05:37,005 INFO L87 Difference]: Start difference. First operand 45882 states and 53612 transitions. Second operand 6 states. [2020-10-14 21:05:39,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:05:39,048 INFO L93 Difference]: Finished difference Result 85893 states and 100049 transitions. [2020-10-14 21:05:39,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:05:39,049 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 426 [2020-10-14 21:05:39,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:05:39,165 INFO L225 Difference]: With dead ends: 85893 [2020-10-14 21:05:39,166 INFO L226 Difference]: Without dead ends: 43301 [2020-10-14 21:05:39,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:05:39,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43301 states. [2020-10-14 21:05:39,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43301 to 41382. [2020-10-14 21:05:39,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41382 states. [2020-10-14 21:05:39,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41382 states to 41382 states and 47717 transitions. [2020-10-14 21:05:39,734 INFO L78 Accepts]: Start accepts. Automaton has 41382 states and 47717 transitions. Word has length 426 [2020-10-14 21:05:39,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:05:39,734 INFO L479 AbstractCegarLoop]: Abstraction has 41382 states and 47717 transitions. [2020-10-14 21:05:39,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:05:39,734 INFO L276 IsEmpty]: Start isEmpty. Operand 41382 states and 47717 transitions. [2020-10-14 21:05:39,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2020-10-14 21:05:39,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:05:39,744 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-14 21:05:39,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 21:05:39,745 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:05:39,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:05:39,745 INFO L82 PathProgramCache]: Analyzing trace with hash 180952985, now seen corresponding path program 1 times [2020-10-14 21:05:39,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:05:39,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727242364] [2020-10-14 21:05:39,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:05:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:39,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:39,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:41,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:42,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:42,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 456 [2020-10-14 21:05:42,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:05:42,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2392 [2020-10-14 21:05:42,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:42,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:42,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:05:42,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-14 21:05:42,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 21:05:42,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:42,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:05:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:42,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:42,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:42,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:05:42,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:42,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:05:42,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:42,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:42,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:42,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:42,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:42,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:42,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:05:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:42,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:42,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:42,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:05:42,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:42,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 21:05:42,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:42,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:42,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:42,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:42,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:42,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:42,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 21:05:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:42,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:42,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:42,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:05:42,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:42,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 21:05:42,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:42,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:42,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:42,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:42,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:42,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:42,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 21:05:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:42,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:42,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:42,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 21:05:42,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:42,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 21:05:42,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:42,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:42,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:05:42,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:42,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:05:42,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:42,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-14 21:05:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:42,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:42,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:42,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:05:42,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:42,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 21:05:42,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:42,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:42,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:05:42,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:05:42,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:05:42,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:42,664 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 437 proven. 2 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-10-14 21:05:42,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727242364] [2020-10-14 21:05:42,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:05:42,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:05:42,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171919997] [2020-10-14 21:05:42,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:05:42,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:05:42,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:05:42,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:05:42,666 INFO L87 Difference]: Start difference. First operand 41382 states and 47717 transitions. Second operand 7 states. [2020-10-14 21:05:46,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:05:46,502 INFO L93 Difference]: Finished difference Result 81818 states and 94189 transitions. [2020-10-14 21:05:46,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:05:46,503 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 440 [2020-10-14 21:05:46,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:05:46,565 INFO L225 Difference]: With dead ends: 81818 [2020-10-14 21:05:46,565 INFO L226 Difference]: Without dead ends: 40630 [2020-10-14 21:05:46,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:05:46,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40630 states. [2020-10-14 21:05:46,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40630 to 40425. [2020-10-14 21:05:46,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40425 states. [2020-10-14 21:05:47,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40425 states to 40425 states and 45581 transitions. [2020-10-14 21:05:47,022 INFO L78 Accepts]: Start accepts. Automaton has 40425 states and 45581 transitions. Word has length 440 [2020-10-14 21:05:47,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:05:47,023 INFO L479 AbstractCegarLoop]: Abstraction has 40425 states and 45581 transitions. [2020-10-14 21:05:47,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:05:47,023 INFO L276 IsEmpty]: Start isEmpty. Operand 40425 states and 45581 transitions. [2020-10-14 21:05:47,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2020-10-14 21:05:47,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:05:47,032 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:05:47,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 21:05:47,033 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:05:47,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:05:47,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1044450561, now seen corresponding path program 1 times [2020-10-14 21:05:47,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:05:47,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762831642] [2020-10-14 21:05:47,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:05:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:47,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:47,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:48,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:48,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 456 [2020-10-14 21:05:48,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:05:48,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 934 [2020-10-14 21:05:48,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:48,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:48,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:05:48,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 400 [2020-10-14 21:05:48,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 21:05:48,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:48,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:05:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:48,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:48,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:48,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:05:48,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:48,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:05:48,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:48,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:48,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:48,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:48,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:48,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:48,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:05:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:48,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:48,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:48,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:05:48,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:48,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 21:05:48,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:48,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:48,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:48,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:48,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:48,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:48,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:05:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:48,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:48,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:48,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 21:05:48,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:48,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 21:05:48,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:48,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:48,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:48,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:48,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:48,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:48,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-14 21:05:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:48,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:48,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:48,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:05:48,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:48,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 21:05:48,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:48,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:48,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:05:48,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:48,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:05:48,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:05:48,443 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 150 proven. 3 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2020-10-14 21:05:48,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762831642] [2020-10-14 21:05:48,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:05:48,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:05:48,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725694509] [2020-10-14 21:05:48,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:05:48,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:05:48,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:05:48,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:05:48,445 INFO L87 Difference]: Start difference. First operand 40425 states and 45581 transitions. Second operand 5 states. [2020-10-14 21:05:51,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:05:51,894 INFO L93 Difference]: Finished difference Result 74998 states and 84873 transitions. [2020-10-14 21:05:51,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:05:51,896 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 442 [2020-10-14 21:05:51,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:05:51,969 INFO L225 Difference]: With dead ends: 74998 [2020-10-14 21:05:51,969 INFO L226 Difference]: Without dead ends: 42915 [2020-10-14 21:05:52,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:05:52,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42915 states. [2020-10-14 21:05:52,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42915 to 42709. [2020-10-14 21:05:52,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42709 states. [2020-10-14 21:05:52,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42709 states to 42709 states and 48224 transitions. [2020-10-14 21:05:52,466 INFO L78 Accepts]: Start accepts. Automaton has 42709 states and 48224 transitions. Word has length 442 [2020-10-14 21:05:52,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:05:52,466 INFO L479 AbstractCegarLoop]: Abstraction has 42709 states and 48224 transitions. [2020-10-14 21:05:52,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:05:52,467 INFO L276 IsEmpty]: Start isEmpty. Operand 42709 states and 48224 transitions. [2020-10-14 21:05:52,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2020-10-14 21:05:52,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:05:52,482 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:05:52,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 21:05:52,482 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:05:52,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:05:52,483 INFO L82 PathProgramCache]: Analyzing trace with hash -56941765, now seen corresponding path program 1 times [2020-10-14 21:05:52,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:05:52,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091061344] [2020-10-14 21:05:52,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:05:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:52,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:52,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:52,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:54,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:54,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 469 [2020-10-14 21:05:54,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:05:54,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2013 [2020-10-14 21:05:54,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:54,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:54,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:05:54,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-14 21:05:54,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-14 21:05:54,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:54,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:05:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:54,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:54,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:54,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:05:54,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:54,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:05:54,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:54,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:54,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:54,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:54,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:54,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:54,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:05:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:54,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:54,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:54,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 21:05:54,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:54,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 21:05:54,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:54,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:54,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:54,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:54,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:54,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:54,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 21:05:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:54,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:54,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:54,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 21:05:54,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:54,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 21:05:54,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:54,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:05:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 21:05:54,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:54,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-14 21:05:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:54,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:55,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:55,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 21:05:55,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:55,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 21:05:55,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:55,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:55,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:05:55,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:05:55,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 21:05:55,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:55,174 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 374 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 21:05:55,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091061344] [2020-10-14 21:05:55,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:05:55,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:05:55,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182956844] [2020-10-14 21:05:55,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:05:55,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:05:55,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:05:55,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:05:55,176 INFO L87 Difference]: Start difference. First operand 42709 states and 48224 transitions. Second operand 7 states. [2020-10-14 21:05:59,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:05:59,982 INFO L93 Difference]: Finished difference Result 80666 states and 91162 transitions. [2020-10-14 21:05:59,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:05:59,983 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 455 [2020-10-14 21:05:59,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:06:00,086 INFO L225 Difference]: With dead ends: 80666 [2020-10-14 21:06:00,086 INFO L226 Difference]: Without dead ends: 45703 [2020-10-14 21:06:00,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:06:00,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45703 states. [2020-10-14 21:06:00,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45703 to 43997. [2020-10-14 21:06:00,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43997 states. [2020-10-14 21:06:00,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43997 states to 43997 states and 49251 transitions. [2020-10-14 21:06:00,651 INFO L78 Accepts]: Start accepts. Automaton has 43997 states and 49251 transitions. Word has length 455 [2020-10-14 21:06:00,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:06:00,652 INFO L479 AbstractCegarLoop]: Abstraction has 43997 states and 49251 transitions. [2020-10-14 21:06:00,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:06:00,652 INFO L276 IsEmpty]: Start isEmpty. Operand 43997 states and 49251 transitions. [2020-10-14 21:06:00,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-10-14 21:06:00,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:00,669 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:06:00,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 21:06:00,669 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:00,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:00,669 INFO L82 PathProgramCache]: Analyzing trace with hash 375644522, now seen corresponding path program 1 times [2020-10-14 21:06:00,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:00,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678479674] [2020-10-14 21:06:00,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:00,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:00,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:01,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:01,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:03,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:03,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 475 [2020-10-14 21:06:03,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:06:03,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2698 [2020-10-14 21:06:03,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:03,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:03,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:03,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-14 21:06:03,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 21:06:03,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:03,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:03,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:03,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:03,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:03,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:03,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:06:03,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:03,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:03,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:06:03,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:03,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:06:03,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:03,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:06:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:03,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:03,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:03,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:06:03,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:03,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 21:06:03,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:03,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:03,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:06:03,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:03,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:06:03,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:03,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:06:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:03,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:03,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:03,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 21:06:03,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:03,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 21:06:03,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:03,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:03,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:03,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:03,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:06:03,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:03,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-14 21:06:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:03,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:03,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:03,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 21:06:03,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:03,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 21:06:03,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:03,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:03,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:03,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:03,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 21:06:03,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:04,099 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 392 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-14 21:06:04,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678479674] [2020-10-14 21:06:04,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:06:04,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:06:04,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197243729] [2020-10-14 21:06:04,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:06:04,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:04,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:06:04,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:06:04,101 INFO L87 Difference]: Start difference. First operand 43997 states and 49251 transitions. Second operand 7 states. [2020-10-14 21:06:09,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:06:09,026 INFO L93 Difference]: Finished difference Result 80800 states and 90477 transitions. [2020-10-14 21:06:09,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:06:09,028 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 461 [2020-10-14 21:06:09,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:06:09,137 INFO L225 Difference]: With dead ends: 80800 [2020-10-14 21:06:09,137 INFO L226 Difference]: Without dead ends: 45513 [2020-10-14 21:06:09,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:06:09,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45513 states. [2020-10-14 21:06:09,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45513 to 43801. [2020-10-14 21:06:09,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43801 states. [2020-10-14 21:06:09,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43801 states to 43801 states and 48957 transitions. [2020-10-14 21:06:09,858 INFO L78 Accepts]: Start accepts. Automaton has 43801 states and 48957 transitions. Word has length 461 [2020-10-14 21:06:09,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:06:09,859 INFO L479 AbstractCegarLoop]: Abstraction has 43801 states and 48957 transitions. [2020-10-14 21:06:09,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:06:09,859 INFO L276 IsEmpty]: Start isEmpty. Operand 43801 states and 48957 transitions. [2020-10-14 21:06:09,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2020-10-14 21:06:09,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:09,870 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 21:06:09,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 21:06:09,871 INFO L427 AbstractCegarLoop]: === Iteration 29 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:09,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:09,871 INFO L82 PathProgramCache]: Analyzing trace with hash 510218611, now seen corresponding path program 1 times [2020-10-14 21:06:09,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:09,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888598379] [2020-10-14 21:06:09,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:09,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:10,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:10,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:12,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:12,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 487 [2020-10-14 21:06:12,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:06:12,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2519 [2020-10-14 21:06:12,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:12,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:12,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 21:06:12,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:06:12,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 481 [2020-10-14 21:06:12,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:12,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:12,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:12,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:12,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:12,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:12,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:06:12,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:12,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:12,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:12,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:12,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:06:12,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:12,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:06:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:12,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:12,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:12,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:06:12,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:12,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 21:06:12,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:12,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:12,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:06:12,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:12,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 21:06:12,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:12,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:06:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:12,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:12,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:12,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 21:06:12,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:12,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 21:06:12,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:12,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:12,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:12,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:12,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-14 21:06:12,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:12,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-14 21:06:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:13,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:13,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:13,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:06:13,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:13,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-10-14 21:06:13,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:13,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:13,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:06:13,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:13,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:06:13,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:13,688 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 266 proven. 148 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-14 21:06:13,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888598379] [2020-10-14 21:06:13,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:06:13,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 21:06:13,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905651857] [2020-10-14 21:06:13,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 21:06:13,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:13,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 21:06:13,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:06:13,690 INFO L87 Difference]: Start difference. First operand 43801 states and 48957 transitions. Second operand 11 states. [2020-10-14 21:06:21,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:06:21,533 INFO L93 Difference]: Finished difference Result 70773 states and 81188 transitions. [2020-10-14 21:06:21,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 21:06:21,535 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 473 [2020-10-14 21:06:21,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:06:21,681 INFO L225 Difference]: With dead ends: 70773 [2020-10-14 21:06:21,681 INFO L226 Difference]: Without dead ends: 70771 [2020-10-14 21:06:21,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=462, Unknown=0, NotChecked=0, Total=650 [2020-10-14 21:06:21,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70771 states. [2020-10-14 21:06:22,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70771 to 66631. [2020-10-14 21:06:22,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66631 states. [2020-10-14 21:06:22,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66631 states to 66631 states and 74546 transitions. [2020-10-14 21:06:22,672 INFO L78 Accepts]: Start accepts. Automaton has 66631 states and 74546 transitions. Word has length 473 [2020-10-14 21:06:22,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:06:22,672 INFO L479 AbstractCegarLoop]: Abstraction has 66631 states and 74546 transitions. [2020-10-14 21:06:22,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 21:06:22,672 INFO L276 IsEmpty]: Start isEmpty. Operand 66631 states and 74546 transitions. [2020-10-14 21:06:22,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-10-14 21:06:22,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:22,688 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:06:22,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 21:06:22,689 INFO L427 AbstractCegarLoop]: === Iteration 30 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:22,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:22,689 INFO L82 PathProgramCache]: Analyzing trace with hash -642234180, now seen corresponding path program 1 times [2020-10-14 21:06:22,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:22,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919999897] [2020-10-14 21:06:22,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:22,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:22,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:23,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:23,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:23,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:26,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:27,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:27,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 491 [2020-10-14 21:06:27,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 21:06:27,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 21:06:27,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:27,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:27,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 21:06:27,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:06:27,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 358 [2020-10-14 21:06:27,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:27,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:27,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:27,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:27,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:27,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:27,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:06:27,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:27,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:27,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:27,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:27,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:06:27,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:27,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:06:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:27,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:27,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:27,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:06:27,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:27,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 21:06:27,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:27,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:27,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:27,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:27,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 21:06:27,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:28,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 21:06:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:28,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:28,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:28,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:06:28,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:28,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 21:06:28,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:28,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:28,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:06:28,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:28,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:06:28,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:28,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 21:06:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:28,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:28,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:28,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:28,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 21:06:28,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:06:28,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 21:06:28,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:28,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:28,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:28,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:28,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 21:06:28,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:28,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-14 21:06:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:28,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:28,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:28,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 21:06:28,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:28,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 21:06:28,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:28,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:28,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:06:28,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-14 21:06:28,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:06:28,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:28,780 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 404 proven. 287 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 21:06:28,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919999897] [2020-10-14 21:06:28,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:06:28,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 21:06:28,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163055609] [2020-10-14 21:06:28,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 21:06:28,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:28,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 21:06:28,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:06:28,782 INFO L87 Difference]: Start difference. First operand 66631 states and 74546 transitions. Second operand 11 states. [2020-10-14 21:06:34,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:06:34,107 INFO L93 Difference]: Finished difference Result 114715 states and 129852 transitions. [2020-10-14 21:06:34,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 21:06:34,109 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 475 [2020-10-14 21:06:34,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:06:34,235 INFO L225 Difference]: With dead ends: 114715 [2020-10-14 21:06:34,235 INFO L226 Difference]: Without dead ends: 67718 [2020-10-14 21:06:34,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2020-10-14 21:06:34,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67718 states. [2020-10-14 21:06:35,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67718 to 66821. [2020-10-14 21:06:35,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66821 states. [2020-10-14 21:06:35,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66821 states to 66821 states and 74746 transitions. [2020-10-14 21:06:35,470 INFO L78 Accepts]: Start accepts. Automaton has 66821 states and 74746 transitions. Word has length 475 [2020-10-14 21:06:35,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:06:35,471 INFO L479 AbstractCegarLoop]: Abstraction has 66821 states and 74746 transitions. [2020-10-14 21:06:35,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 21:06:35,471 INFO L276 IsEmpty]: Start isEmpty. Operand 66821 states and 74746 transitions. [2020-10-14 21:06:35,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2020-10-14 21:06:35,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:35,487 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:06:35,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 21:06:35,487 INFO L427 AbstractCegarLoop]: === Iteration 31 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:35,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:35,487 INFO L82 PathProgramCache]: Analyzing trace with hash -838348987, now seen corresponding path program 1 times [2020-10-14 21:06:35,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:35,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232180389] [2020-10-14 21:06:35,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:35,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:36,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:36,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 506 [2020-10-14 21:06:36,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:36,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-10-14 21:06:36,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:36,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:36,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:36,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-14 21:06:36,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 21:06:36,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:36,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:36,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:36,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:36,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:36,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:36,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:06:36,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:36,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:36,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:06:36,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:36,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:06:36,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:36,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:06:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:36,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:36,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:36,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 21:06:36,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:36,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 21:06:36,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:36,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:36,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:06:36,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:36,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:06:36,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:36,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 21:06:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:36,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:36,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:36,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 21:06:36,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:36,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 21:06:36,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:36,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:36,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:36,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:36,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 21:06:36,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:36,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-14 21:06:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:36,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:36,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:36,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:06:36,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:36,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 21:06:36,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:36,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:36,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:36,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:36,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:06:36,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:36,612 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 366 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-14 21:06:36,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232180389] [2020-10-14 21:06:36,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:06:36,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:06:36,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63587711] [2020-10-14 21:06:36,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:06:36,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:36,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:06:36,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:06:36,613 INFO L87 Difference]: Start difference. First operand 66821 states and 74746 transitions. Second operand 7 states. [2020-10-14 21:06:40,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:06:40,323 INFO L93 Difference]: Finished difference Result 114337 states and 128030 transitions. [2020-10-14 21:06:40,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 21:06:40,325 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 492 [2020-10-14 21:06:40,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:06:40,434 INFO L225 Difference]: With dead ends: 114337 [2020-10-14 21:06:40,434 INFO L226 Difference]: Without dead ends: 67148 [2020-10-14 21:06:40,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:06:40,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67148 states.