/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=BIGGEST --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_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:15:10,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:15:10,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:15:10,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:15:10,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:15:10,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:15:10,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:15:10,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:15:10,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:15:10,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:15:10,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:15:10,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:15:10,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:15:10,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:15:10,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:15:10,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:15:10,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:15:10,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:15:10,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:15:10,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:15:10,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:15:10,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:15:10,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:15:10,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:15:10,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:15:10,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:15:10,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:15:10,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:15:10,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:15:10,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:15:10,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:15:10,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:15:10,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:15:10,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:15:10,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:15:10,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:15:10,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:15:10,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:15:10,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:15:10,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:15:10,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:15:10,419 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 [2020-10-12 13:15:10,467 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:15:10,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:15:10,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:15:10,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:15:10,470 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:15:10,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:15:10,471 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:15:10,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:15:10,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:15:10,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:15:10,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:15:10,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:15:10,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:15:10,473 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:15:10,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:15:10,473 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:15:10,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:15:10,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:15:10,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:15:10,474 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:15:10,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:15:10,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:15:10,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:15:10,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:15:10,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:15:10,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:15:10,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:15:10,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:15:10,476 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:15:10,476 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 13:15:10,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:15:10,788 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:15:10,791 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:15:10,793 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:15:10,794 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:15:10,794 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label52.c [2020-10-12 13:15:10,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e70ceba05/b4ac89a67be04e94b75bdfd44374987f/FLAG296be92f6 [2020-10-12 13:15:11,472 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:15:11,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label52.c [2020-10-12 13:15:11,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e70ceba05/b4ac89a67be04e94b75bdfd44374987f/FLAG296be92f6 [2020-10-12 13:15:11,743 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e70ceba05/b4ac89a67be04e94b75bdfd44374987f [2020-10-12 13:15:11,752 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:15:11,753 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:15:11,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:15:11,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:15:11,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:15:11,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:15:11" (1/1) ... [2020-10-12 13:15:11,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@780d07db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:15:11, skipping insertion in model container [2020-10-12 13:15:11,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:15:11" (1/1) ... [2020-10-12 13:15:11,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:15:11,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:15:12,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:15:12,534 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:15:12,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:15:12,885 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:15:12,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:15:12 WrapperNode [2020-10-12 13:15:12,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:15:12,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:15:12,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:15:12,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:15:12,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:15:12" (1/1) ... [2020-10-12 13:15:12,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:15:12" (1/1) ... [2020-10-12 13:15:12,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:15:12" (1/1) ... [2020-10-12 13:15:12,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:15:12" (1/1) ... [2020-10-12 13:15:13,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:15:12" (1/1) ... [2020-10-12 13:15:13,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:15:12" (1/1) ... [2020-10-12 13:15:13,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:15:12" (1/1) ... [2020-10-12 13:15:13,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:15:13,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:15:13,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:15:13,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:15:13,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:15:12" (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 [2020-10-12 13:15:13,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:15:13,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:15:13,154 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:15:13,154 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:15:13,154 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:15:13,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:15:13,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:15:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:15:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:15:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:15:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:15:14,879 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:15:14,880 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:15:14,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:15:14 BoogieIcfgContainer [2020-10-12 13:15:14,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:15:14,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:15:14,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:15:14,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:15:14,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:15:11" (1/3) ... [2020-10-12 13:15:14,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241d718b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:15:14, skipping insertion in model container [2020-10-12 13:15:14,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:15:12" (2/3) ... [2020-10-12 13:15:14,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241d718b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:15:14, skipping insertion in model container [2020-10-12 13:15:14,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:15:14" (3/3) ... [2020-10-12 13:15:14,897 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label52.c [2020-10-12 13:15:14,908 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:15:14,916 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:15:14,931 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:15:14,959 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:15:14,960 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:15:14,960 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:15:14,960 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:15:14,960 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:15:14,960 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:15:14,961 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:15:14,961 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:15:14,987 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-12 13:15:14,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 13:15:14,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:15:14,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:15:14,999 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:15:15,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:15:15,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1581984787, now seen corresponding path program 1 times [2020-10-12 13:15:15,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:15:15,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248827059] [2020-10-12 13:15:15,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:15:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:15,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:15,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:15,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 13:15:15,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:15,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-12 13:15:15,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:15,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:15:15,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:15:15,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 13:15:15,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 13:15:15,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:15:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:15,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:15,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:15,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:15:15,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:15,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 13:15:15,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:15,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:15:15,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:15,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:15:15,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:15,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:15:15,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248827059] [2020-10-12 13:15:15,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:15:15,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:15:15,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323914060] [2020-10-12 13:15:16,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:15:16,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:15:16,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:15:16,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:15:16,024 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-10-12 13:15:18,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:15:18,665 INFO L93 Difference]: Finished difference Result 791 states and 1386 transitions. [2020-10-12 13:15:18,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:15:18,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-12 13:15:18,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:15:18,686 INFO L225 Difference]: With dead ends: 791 [2020-10-12 13:15:18,686 INFO L226 Difference]: Without dead ends: 434 [2020-10-12 13:15:18,695 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 [2020-10-12 13:15:18,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-12 13:15:18,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 430. [2020-10-12 13:15:18,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-12 13:15:18,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 618 transitions. [2020-10-12 13:15:18,783 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 618 transitions. Word has length 58 [2020-10-12 13:15:18,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:15:18,784 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 618 transitions. [2020-10-12 13:15:18,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:15:18,784 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 618 transitions. [2020-10-12 13:15:18,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 13:15:18,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:15:18,790 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, 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] [2020-10-12 13:15:18,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:15:18,791 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:15:18,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:15:18,792 INFO L82 PathProgramCache]: Analyzing trace with hash -734949134, now seen corresponding path program 1 times [2020-10-12 13:15:18,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:15:18,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877164242] [2020-10-12 13:15:18,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:15:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:18,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:18,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:19,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:20,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:20,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 13:15:20,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:15:20,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1592 [2020-10-12 13:15:20,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:20,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:15:20,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:15:20,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 13:15:20,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:15:20,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:15:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:20,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:20,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:20,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:15:20,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:20,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 13:15:20,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:20,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:15:20,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:20,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:15:20,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:20,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:15:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:20,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:20,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:20,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 13:15:20,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:20,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-12 13:15:20,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:20,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:20,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:15:20,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 13:15:20,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:15:20,898 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:15:20,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877164242] [2020-10-12 13:15:20,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:15:20,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:15:20,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385818367] [2020-10-12 13:15:20,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:15:20,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:15:20,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:15:20,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:15:20,912 INFO L87 Difference]: Start difference. First operand 430 states and 618 transitions. Second operand 7 states. [2020-10-12 13:15:23,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:15:23,536 INFO L93 Difference]: Finished difference Result 1274 states and 1857 transitions. [2020-10-12 13:15:23,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:15:23,536 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-12 13:15:23,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:15:23,543 INFO L225 Difference]: With dead ends: 1274 [2020-10-12 13:15:23,544 INFO L226 Difference]: Without dead ends: 850 [2020-10-12 13:15:23,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:15:23,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-10-12 13:15:23,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 826. [2020-10-12 13:15:23,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 826 states. [2020-10-12 13:15:23,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1113 transitions. [2020-10-12 13:15:23,599 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1113 transitions. Word has length 130 [2020-10-12 13:15:23,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:15:23,600 INFO L479 AbstractCegarLoop]: Abstraction has 826 states and 1113 transitions. [2020-10-12 13:15:23,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:15:23,600 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1113 transitions. [2020-10-12 13:15:23,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-12 13:15:23,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:15:23,604 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, 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] [2020-10-12 13:15:23,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:15:23,604 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:15:23,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:15:23,605 INFO L82 PathProgramCache]: Analyzing trace with hash 68835426, now seen corresponding path program 1 times [2020-10-12 13:15:23,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:15:23,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762471814] [2020-10-12 13:15:23,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:15:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:23,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:23,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:24,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:25,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:25,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:25,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 13:15:25,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:15:25,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1719 [2020-10-12 13:15:25,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:25,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:15:25,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:15:25,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-12 13:15:25,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:25,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:15:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:25,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:25,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:25,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:15:25,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:25,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:15:25,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:15:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:25,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:15:25,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:25,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:15:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:25,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:25,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:25,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:25,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:15:25,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:15:25,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-12 13:15:25,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:25,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:25,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:15:25,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:15:25,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:25,895 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:15:25,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762471814] [2020-10-12 13:15:25,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:15:25,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:15:25,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240353790] [2020-10-12 13:15:25,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:15:25,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:15:25,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:15:25,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:15:25,898 INFO L87 Difference]: Start difference. First operand 826 states and 1113 transitions. Second operand 8 states. [2020-10-12 13:15:29,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:15:29,432 INFO L93 Difference]: Finished difference Result 2679 states and 3659 transitions. [2020-10-12 13:15:29,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 13:15:29,432 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 138 [2020-10-12 13:15:29,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:15:29,447 INFO L225 Difference]: With dead ends: 2679 [2020-10-12 13:15:29,447 INFO L226 Difference]: Without dead ends: 1859 [2020-10-12 13:15:29,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:15:29,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1859 states. [2020-10-12 13:15:29,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1859 to 1820. [2020-10-12 13:15:29,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1820 states. [2020-10-12 13:15:29,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2280 transitions. [2020-10-12 13:15:29,511 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2280 transitions. Word has length 138 [2020-10-12 13:15:29,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:15:29,511 INFO L479 AbstractCegarLoop]: Abstraction has 1820 states and 2280 transitions. [2020-10-12 13:15:29,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:15:29,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2280 transitions. [2020-10-12 13:15:29,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-12 13:15:29,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:15:29,516 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, 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] [2020-10-12 13:15:29,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:15:29,517 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:15:29,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:15:29,517 INFO L82 PathProgramCache]: Analyzing trace with hash 485557948, now seen corresponding path program 1 times [2020-10-12 13:15:29,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:15:29,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954989184] [2020-10-12 13:15:29,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:15:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:29,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:29,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:29,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-12 13:15:29,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:29,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-12 13:15:29,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:29,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:29,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:15:29,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 13:15:29,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:29,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:15:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:29,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:29,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:29,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:15:29,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:29,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:15:29,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:29,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:29,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:29,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:29,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:15:29,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:15:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:30,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:30,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:30,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:15:30,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:30,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-12 13:15:30,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:30,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:15:30,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:30,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:15:30,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:30,291 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:15:30,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954989184] [2020-10-12 13:15:30,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:15:30,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:15:30,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214972861] [2020-10-12 13:15:30,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:15:30,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:15:30,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:15:30,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:15:30,297 INFO L87 Difference]: Start difference. First operand 1820 states and 2280 transitions. Second operand 6 states. [2020-10-12 13:15:32,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:15:32,962 INFO L93 Difference]: Finished difference Result 5053 states and 6751 transitions. [2020-10-12 13:15:32,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:15:32,963 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2020-10-12 13:15:32,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:15:32,985 INFO L225 Difference]: With dead ends: 5053 [2020-10-12 13:15:32,985 INFO L226 Difference]: Without dead ends: 3617 [2020-10-12 13:15:32,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:15:32,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3617 states. [2020-10-12 13:15:33,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3617 to 3581. [2020-10-12 13:15:33,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3581 states. [2020-10-12 13:15:33,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3581 states to 3581 states and 4547 transitions. [2020-10-12 13:15:33,114 INFO L78 Accepts]: Start accepts. Automaton has 3581 states and 4547 transitions. Word has length 189 [2020-10-12 13:15:33,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:15:33,116 INFO L479 AbstractCegarLoop]: Abstraction has 3581 states and 4547 transitions. [2020-10-12 13:15:33,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:15:33,116 INFO L276 IsEmpty]: Start isEmpty. Operand 3581 states and 4547 transitions. [2020-10-12 13:15:33,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-12 13:15:33,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:15:33,124 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, 3, 3, 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] [2020-10-12 13:15:33,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:15:33,124 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:15:33,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:15:33,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1048024277, now seen corresponding path program 1 times [2020-10-12 13:15:33,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:15:33,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006923180] [2020-10-12 13:15:33,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:15:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:33,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:33,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:34,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:34,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:34,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-12 13:15:34,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:15:34,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1789 [2020-10-12 13:15:34,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:34,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:34,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-12 13:15:34,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 13:15:34,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:35,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:15:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:35,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:35,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:35,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:15:35,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:35,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:15:35,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:35,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:35,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:35,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:35,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:35,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:15:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:35,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:35,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:35,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:15:35,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:35,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 13:15:35,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:35,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:15:35,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:35,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:15:35,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:35,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:15:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:35,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:35,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:35,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 13:15:35,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:35,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-12 13:15:35,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:35,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:35,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:15:35,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 13:15:35,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:35,516 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:15:35,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006923180] [2020-10-12 13:15:35,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:15:35,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:15:35,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753510252] [2020-10-12 13:15:35,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:15:35,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:15:35,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:15:35,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:15:35,529 INFO L87 Difference]: Start difference. First operand 3581 states and 4547 transitions. Second operand 7 states. [2020-10-12 13:15:38,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:15:38,024 INFO L93 Difference]: Finished difference Result 8066 states and 11080 transitions. [2020-10-12 13:15:38,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:15:38,025 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-10-12 13:15:38,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:15:38,061 INFO L225 Difference]: With dead ends: 8066 [2020-10-12 13:15:38,061 INFO L226 Difference]: Without dead ends: 4869 [2020-10-12 13:15:38,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:15:38,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4869 states. [2020-10-12 13:15:38,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4869 to 4766. [2020-10-12 13:15:38,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4766 states. [2020-10-12 13:15:38,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4766 states to 4766 states and 6316 transitions. [2020-10-12 13:15:38,295 INFO L78 Accepts]: Start accepts. Automaton has 4766 states and 6316 transitions. Word has length 246 [2020-10-12 13:15:38,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:15:38,296 INFO L479 AbstractCegarLoop]: Abstraction has 4766 states and 6316 transitions. [2020-10-12 13:15:38,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:15:38,296 INFO L276 IsEmpty]: Start isEmpty. Operand 4766 states and 6316 transitions. [2020-10-12 13:15:38,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-12 13:15:38,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:15:38,302 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, 3, 3, 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] [2020-10-12 13:15:38,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:15:38,302 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:15:38,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:15:38,303 INFO L82 PathProgramCache]: Analyzing trace with hash 320602860, now seen corresponding path program 1 times [2020-10-12 13:15:38,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:15:38,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308766255] [2020-10-12 13:15:38,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:15:38,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:38,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:38,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:39,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:41,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:41,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-12 13:15:41,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:15:41,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2898 [2020-10-12 13:15:41,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:41,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:15:41,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:15:41,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-12 13:15:41,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:15:41,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:15:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:41,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:41,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:41,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:15:41,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:41,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 13:15:41,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:41,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:15:41,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:41,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:15:41,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:15:41,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:15:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:41,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:41,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:41,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:15:41,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:41,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-12 13:15:41,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:41,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:41,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:15:41,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 13:15:41,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:41,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:15:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:41,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:41,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:41,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:15:41,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:41,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-12 13:15:41,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:41,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:15:41,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:15:41,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:15:41,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:42,195 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 154 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 13:15:42,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308766255] [2020-10-12 13:15:42,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:15:42,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:15:42,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840535325] [2020-10-12 13:15:42,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:15:42,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:15:42,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:15:42,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:15:42,198 INFO L87 Difference]: Start difference. First operand 4766 states and 6316 transitions. Second operand 9 states. [2020-10-12 13:15:45,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:15:45,247 INFO L93 Difference]: Finished difference Result 9259 states and 12554 transitions. [2020-10-12 13:15:45,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 13:15:45,248 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 247 [2020-10-12 13:15:45,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:15:45,269 INFO L225 Difference]: With dead ends: 9259 [2020-10-12 13:15:45,269 INFO L226 Difference]: Without dead ends: 4867 [2020-10-12 13:15:45,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-12 13:15:45,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4867 states. [2020-10-12 13:15:45,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4867 to 4790. [2020-10-12 13:15:45,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4790 states. [2020-10-12 13:15:45,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4790 states to 4790 states and 6338 transitions. [2020-10-12 13:15:45,420 INFO L78 Accepts]: Start accepts. Automaton has 4790 states and 6338 transitions. Word has length 247 [2020-10-12 13:15:45,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:15:45,421 INFO L479 AbstractCegarLoop]: Abstraction has 4790 states and 6338 transitions. [2020-10-12 13:15:45,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:15:45,421 INFO L276 IsEmpty]: Start isEmpty. Operand 4790 states and 6338 transitions. [2020-10-12 13:15:45,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-12 13:15:45,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:15:45,427 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:15:45,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:15:45,427 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:15:45,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:15:45,428 INFO L82 PathProgramCache]: Analyzing trace with hash -120279353, now seen corresponding path program 1 times [2020-10-12 13:15:45,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:15:45,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265511986] [2020-10-12 13:15:45,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:15:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:45,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:45,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:45,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:47,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:47,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-12 13:15:47,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:15:47,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1935 [2020-10-12 13:15:47,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-10-12 13:15:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 13:15:47,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:15:47,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:15:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:47,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:47,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:47,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:15:47,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:47,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:15:47,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:47,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:47,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:47,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:47,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:47,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:15:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:47,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:47,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:47,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:15:47,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:47,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 13:15:47,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:47,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:47,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:47,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:47,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:47,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:15:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:47,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:47,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:47,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 13:15:47,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:47,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-12 13:15:47,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:15:47,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:47,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 13:15:47,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:47,808 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-12 13:15:47,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265511986] [2020-10-12 13:15:47,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:15:47,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:15:47,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496966492] [2020-10-12 13:15:47,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:15:47,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:15:47,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:15:47,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:15:47,811 INFO L87 Difference]: Start difference. First operand 4790 states and 6338 transitions. Second operand 5 states. [2020-10-12 13:15:50,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:15:50,191 INFO L93 Difference]: Finished difference Result 10405 states and 14179 transitions. [2020-10-12 13:15:50,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:15:50,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 248 [2020-10-12 13:15:50,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:15:50,217 INFO L225 Difference]: With dead ends: 10405 [2020-10-12 13:15:50,217 INFO L226 Difference]: Without dead ends: 5999 [2020-10-12 13:15:50,231 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 [2020-10-12 13:15:50,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5999 states. [2020-10-12 13:15:50,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5999 to 5956. [2020-10-12 13:15:50,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5956 states. [2020-10-12 13:15:50,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5956 states to 5956 states and 7866 transitions. [2020-10-12 13:15:50,388 INFO L78 Accepts]: Start accepts. Automaton has 5956 states and 7866 transitions. Word has length 248 [2020-10-12 13:15:50,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:15:50,389 INFO L479 AbstractCegarLoop]: Abstraction has 5956 states and 7866 transitions. [2020-10-12 13:15:50,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:15:50,389 INFO L276 IsEmpty]: Start isEmpty. Operand 5956 states and 7866 transitions. [2020-10-12 13:15:50,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-12 13:15:50,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:15:50,396 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:15:50,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:15:50,396 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:15:50,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:15:50,397 INFO L82 PathProgramCache]: Analyzing trace with hash -2060195429, now seen corresponding path program 1 times [2020-10-12 13:15:50,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:15:50,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830639400] [2020-10-12 13:15:50,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:15:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:50,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:50,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:50,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:52,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:53,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:53,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-12 13:15:53,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:15:53,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2674 [2020-10-12 13:15:53,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:53,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:15:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-12 13:15:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-12 13:15:53,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:15:53,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:15:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:53,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:53,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:53,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:15:53,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:53,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:15:53,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:53,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:53,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:53,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:53,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:53,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:15:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:53,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:53,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:53,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:15:53,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:53,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-12 13:15:53,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:53,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:15:53,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:53,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:15:53,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:53,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:15:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:53,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:53,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:53,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:15:53,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:53,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-12 13:15:53,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:53,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:53,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:15:53,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:15:53,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:53,785 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 126 proven. 51 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:15:53,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830639400] [2020-10-12 13:15:53,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:15:53,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:15:53,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323527148] [2020-10-12 13:15:53,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:15:53,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:15:53,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:15:53,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:15:53,789 INFO L87 Difference]: Start difference. First operand 5956 states and 7866 transitions. Second operand 6 states. [2020-10-12 13:15:56,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:15:56,572 INFO L93 Difference]: Finished difference Result 14659 states and 19975 transitions. [2020-10-12 13:15:56,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:15:56,573 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 254 [2020-10-12 13:15:56,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:15:56,608 INFO L225 Difference]: With dead ends: 14659 [2020-10-12 13:15:56,609 INFO L226 Difference]: Without dead ends: 9087 [2020-10-12 13:15:56,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:15:56,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9087 states. [2020-10-12 13:15:56,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9087 to 8867. [2020-10-12 13:15:56,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8867 states. [2020-10-12 13:15:56,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8867 states to 8867 states and 11897 transitions. [2020-10-12 13:15:56,824 INFO L78 Accepts]: Start accepts. Automaton has 8867 states and 11897 transitions. Word has length 254 [2020-10-12 13:15:56,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:15:56,824 INFO L479 AbstractCegarLoop]: Abstraction has 8867 states and 11897 transitions. [2020-10-12 13:15:56,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:15:56,825 INFO L276 IsEmpty]: Start isEmpty. Operand 8867 states and 11897 transitions. [2020-10-12 13:15:56,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-12 13:15:56,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:15:56,832 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:15:56,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:15:56,833 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:15:56,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:15:56,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1524200388, now seen corresponding path program 1 times [2020-10-12 13:15:56,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:15:56,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113687818] [2020-10-12 13:15:56,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:15:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:56,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:57,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:57,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:58,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:58,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-12 13:15:58,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:15:58,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1924 [2020-10-12 13:15:58,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:58,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:58,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:15:58,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 13:15:58,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:58,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:15:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:58,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:58,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:58,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:15:58,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:58,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:15:58,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:58,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:58,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:58,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:58,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:15:58,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:15:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:58,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:59,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:59,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:15:59,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:59,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-12 13:15:59,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:59,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:15:59,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:59,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:15:59,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:59,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:15:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:59,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:59,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:59,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 13:15:59,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:59,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-12 13:15:59,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:59,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:59,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:15:59,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:15:59,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:59,340 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:15:59,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113687818] [2020-10-12 13:15:59,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:15:59,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:15:59,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379694514] [2020-10-12 13:15:59,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:15:59,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:15:59,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:15:59,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:15:59,352 INFO L87 Difference]: Start difference. First operand 8867 states and 11897 transitions. Second operand 7 states. [2020-10-12 13:16:03,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:16:03,189 INFO L93 Difference]: Finished difference Result 19701 states and 27329 transitions. [2020-10-12 13:16:03,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:16:03,190 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 258 [2020-10-12 13:16:03,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:16:03,230 INFO L225 Difference]: With dead ends: 19701 [2020-10-12 13:16:03,230 INFO L226 Difference]: Without dead ends: 11218 [2020-10-12 13:16:03,250 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 [2020-10-12 13:16:03,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11218 states. [2020-10-12 13:16:03,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11218 to 11194. [2020-10-12 13:16:03,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11194 states. [2020-10-12 13:16:03,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11194 states to 11194 states and 15002 transitions. [2020-10-12 13:16:03,491 INFO L78 Accepts]: Start accepts. Automaton has 11194 states and 15002 transitions. Word has length 258 [2020-10-12 13:16:03,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:16:03,492 INFO L479 AbstractCegarLoop]: Abstraction has 11194 states and 15002 transitions. [2020-10-12 13:16:03,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:16:03,492 INFO L276 IsEmpty]: Start isEmpty. Operand 11194 states and 15002 transitions. [2020-10-12 13:16:03,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-12 13:16:03,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:16:03,500 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:16:03,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:16:03,500 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:16:03,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:16:03,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1788859649, now seen corresponding path program 1 times [2020-10-12 13:16:03,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:16:03,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223812069] [2020-10-12 13:16:03,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:16:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:03,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:03,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:04,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:04,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-12 13:16:04,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:16:04,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1414 [2020-10-12 13:16:04,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:16:04,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:16:04,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:05,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:16:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:05,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:05,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:05,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:16:05,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:05,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:16:05,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:05,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:05,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:05,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:05,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:05,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:16:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:05,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:05,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:05,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:16:05,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:05,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 13:16:05,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:05,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:16:05,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:05,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:16:05,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:05,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:16:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:05,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:05,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:05,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 13:16:05,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:05,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-12 13:16:05,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:05,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:05,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:05,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 13:16:05,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:16:05,531 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:16:05,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223812069] [2020-10-12 13:16:05,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:16:05,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:16:05,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230575478] [2020-10-12 13:16:05,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:16:05,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:16:05,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:16:05,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:16:05,536 INFO L87 Difference]: Start difference. First operand 11194 states and 15002 transitions. Second operand 7 states. [2020-10-12 13:16:08,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:16:08,300 INFO L93 Difference]: Finished difference Result 24538 states and 33370 transitions. [2020-10-12 13:16:08,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:16:08,301 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 259 [2020-10-12 13:16:08,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:16:08,349 INFO L225 Difference]: With dead ends: 24538 [2020-10-12 13:16:08,350 INFO L226 Difference]: Without dead ends: 13738 [2020-10-12 13:16:08,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:16:08,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13738 states. [2020-10-12 13:16:08,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13738 to 13711. [2020-10-12 13:16:08,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13711 states. [2020-10-12 13:16:08,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13711 states to 13711 states and 18041 transitions. [2020-10-12 13:16:08,754 INFO L78 Accepts]: Start accepts. Automaton has 13711 states and 18041 transitions. Word has length 259 [2020-10-12 13:16:08,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:16:08,754 INFO L479 AbstractCegarLoop]: Abstraction has 13711 states and 18041 transitions. [2020-10-12 13:16:08,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:16:08,755 INFO L276 IsEmpty]: Start isEmpty. Operand 13711 states and 18041 transitions. [2020-10-12 13:16:08,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-12 13:16:08,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:16:08,762 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, 3, 3, 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] [2020-10-12 13:16:08,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 13:16:08,763 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:16:08,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:16:08,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1857326724, now seen corresponding path program 1 times [2020-10-12 13:16:08,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:16:08,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958121281] [2020-10-12 13:16:08,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:16:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:08,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:08,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:10,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:10,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-12 13:16:10,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:16:10,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1195 [2020-10-12 13:16:10,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:10,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:10,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-12 13:16:10,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 13:16:10,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:10,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:16:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:10,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:10,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:10,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:16:10,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:10,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:16:10,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:10,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:10,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:10,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:10,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:10,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:16:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:10,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:10,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:10,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:16:10,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:10,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 13:16:10,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:10,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:10,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:10,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:10,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:16:10,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:16:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:10,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:10,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:10,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:16:10,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:10,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-12 13:16:10,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:10,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:16:10,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:10,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 13:16:10,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:10,485 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-12 13:16:10,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958121281] [2020-10-12 13:16:10,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:16:10,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:16:10,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503895621] [2020-10-12 13:16:10,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:16:10,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:16:10,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:16:10,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:16:10,488 INFO L87 Difference]: Start difference. First operand 13711 states and 18041 transitions. Second operand 5 states. [2020-10-12 13:16:13,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:16:13,051 INFO L93 Difference]: Finished difference Result 27081 states and 35718 transitions. [2020-10-12 13:16:13,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:16:13,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 262 [2020-10-12 13:16:13,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:16:13,082 INFO L225 Difference]: With dead ends: 27081 [2020-10-12 13:16:13,082 INFO L226 Difference]: Without dead ends: 13764 [2020-10-12 13:16:13,106 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 [2020-10-12 13:16:13,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13764 states. [2020-10-12 13:16:13,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13764 to 13535. [2020-10-12 13:16:13,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13535 states. [2020-10-12 13:16:13,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13535 states to 13535 states and 17307 transitions. [2020-10-12 13:16:13,379 INFO L78 Accepts]: Start accepts. Automaton has 13535 states and 17307 transitions. Word has length 262 [2020-10-12 13:16:13,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:16:13,380 INFO L479 AbstractCegarLoop]: Abstraction has 13535 states and 17307 transitions. [2020-10-12 13:16:13,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:16:13,380 INFO L276 IsEmpty]: Start isEmpty. Operand 13535 states and 17307 transitions. [2020-10-12 13:16:13,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-12 13:16:13,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:16:13,389 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:16:13,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 13:16:13,390 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:16:13,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:16:13,390 INFO L82 PathProgramCache]: Analyzing trace with hash 442445896, now seen corresponding path program 1 times [2020-10-12 13:16:13,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:16:13,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450004964] [2020-10-12 13:16:13,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:16:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:13,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:13,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:14,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:14,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-12 13:16:14,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:16:14,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 761 [2020-10-12 13:16:14,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:14,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:14,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-12 13:16:14,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 13:16:14,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:14,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:16:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:14,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:14,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:14,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:16:14,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:14,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:16:14,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:14,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:14,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:14,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:14,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:14,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:16:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:14,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:14,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:14,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:16:14,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:14,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 13:16:14,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:14,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:14,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:14,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:14,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:14,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:16:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:14,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:14,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:14,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 13:16:14,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:14,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 13:16:14,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:14,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:16:14,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:14,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 13:16:14,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:14,823 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-12 13:16:14,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450004964] [2020-10-12 13:16:14,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:16:14,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:16:14,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366551280] [2020-10-12 13:16:14,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:16:14,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:16:14,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:16:14,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:16:14,826 INFO L87 Difference]: Start difference. First operand 13535 states and 17307 transitions. Second operand 5 states. [2020-10-12 13:16:16,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:16:16,474 INFO L93 Difference]: Finished difference Result 26530 states and 33979 transitions. [2020-10-12 13:16:16,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:16:16,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 285 [2020-10-12 13:16:16,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:16:16,510 INFO L225 Difference]: With dead ends: 26530 [2020-10-12 13:16:16,510 INFO L226 Difference]: Without dead ends: 13369 [2020-10-12 13:16:16,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:16:16,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13369 states. [2020-10-12 13:16:16,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13369 to 13345. [2020-10-12 13:16:16,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13345 states. [2020-10-12 13:16:16,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13345 states to 13345 states and 16999 transitions. [2020-10-12 13:16:16,793 INFO L78 Accepts]: Start accepts. Automaton has 13345 states and 16999 transitions. Word has length 285 [2020-10-12 13:16:16,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:16:16,794 INFO L479 AbstractCegarLoop]: Abstraction has 13345 states and 16999 transitions. [2020-10-12 13:16:16,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:16:16,795 INFO L276 IsEmpty]: Start isEmpty. Operand 13345 states and 16999 transitions. [2020-10-12 13:16:16,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-12 13:16:16,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:16:16,807 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:16:16,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 13:16:16,807 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:16:16,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:16:16,808 INFO L82 PathProgramCache]: Analyzing trace with hash -30225496, now seen corresponding path program 1 times [2020-10-12 13:16:16,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:16:16,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675013479] [2020-10-12 13:16:16,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:16:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:16,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:17,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:18,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:18,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-12 13:16:18,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:16:18,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1618 [2020-10-12 13:16:18,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:18,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:18,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:16:18,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 13:16:18,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:18,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:16:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:18,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:18,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:18,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:16:18,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:18,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:16:18,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:18,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:18,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:18,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:18,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:18,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:16:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:18,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:18,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:18,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:16:18,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:18,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-12 13:16:18,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:18,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:16:18,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:18,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:16:18,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:18,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:16:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:18,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:18,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:18,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:16:18,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:18,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-12 13:16:18,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:18,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:18,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:18,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:16:18,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:19,071 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:16:19,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675013479] [2020-10-12 13:16:19,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:16:19,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:16:19,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010397691] [2020-10-12 13:16:19,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:16:19,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:16:19,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:16:19,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:16:19,073 INFO L87 Difference]: Start difference. First operand 13345 states and 16999 transitions. Second operand 7 states. [2020-10-12 13:16:21,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:16:21,516 INFO L93 Difference]: Finished difference Result 27105 states and 34592 transitions. [2020-10-12 13:16:21,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:16:21,516 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2020-10-12 13:16:21,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:16:21,553 INFO L225 Difference]: With dead ends: 27105 [2020-10-12 13:16:21,553 INFO L226 Difference]: Without dead ends: 14154 [2020-10-12 13:16:21,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:16:21,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14154 states. [2020-10-12 13:16:21,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14154 to 14121. [2020-10-12 13:16:21,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14121 states. [2020-10-12 13:16:21,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14121 states to 14121 states and 17949 transitions. [2020-10-12 13:16:21,965 INFO L78 Accepts]: Start accepts. Automaton has 14121 states and 17949 transitions. Word has length 299 [2020-10-12 13:16:21,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:16:21,966 INFO L479 AbstractCegarLoop]: Abstraction has 14121 states and 17949 transitions. [2020-10-12 13:16:21,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:16:21,966 INFO L276 IsEmpty]: Start isEmpty. Operand 14121 states and 17949 transitions. [2020-10-12 13:16:21,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-12 13:16:21,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:16:21,980 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:16:21,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 13:16:21,981 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:16:21,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:16:21,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1295380757, now seen corresponding path program 1 times [2020-10-12 13:16:21,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:16:21,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867943438] [2020-10-12 13:16:21,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:16:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:22,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:22,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:22,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:22,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:23,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:27,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:27,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-12 13:16:27,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:16:27,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4980 [2020-10-12 13:16:27,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:16:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-10-12 13:16:27,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-12 13:16:27,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:27,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:16:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:27,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:27,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:27,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:16:27,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:27,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:16:27,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:27,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:27,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:27,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:27,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:27,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:16:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:27,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:27,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:27,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:16:27,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:27,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 13:16:27,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:27,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:27,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:27,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:27,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:27,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:16:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:27,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:27,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:27,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 13:16:27,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:27,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 13:16:27,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:27,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:16:27,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:27,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 13:16:27,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:27,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-12 13:16:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:27,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:27,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:27,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:27,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 13:16:27,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:16:27,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-12 13:16:27,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:27,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:27,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:27,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 13:16:27,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:27,464 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 259 proven. 52 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-12 13:16:27,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867943438] [2020-10-12 13:16:27,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:16:27,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:16:27,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502494455] [2020-10-12 13:16:27,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:16:27,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:16:27,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:16:27,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:16:27,467 INFO L87 Difference]: Start difference. First operand 14121 states and 17949 transitions. Second operand 6 states. [2020-10-12 13:16:30,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:16:30,533 INFO L93 Difference]: Finished difference Result 30770 states and 39916 transitions. [2020-10-12 13:16:30,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:16:30,534 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 335 [2020-10-12 13:16:30,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:16:30,582 INFO L225 Difference]: With dead ends: 30770 [2020-10-12 13:16:30,582 INFO L226 Difference]: Without dead ends: 17043 [2020-10-12 13:16:30,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:16:30,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17043 states. [2020-10-12 13:16:30,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17043 to 14893. [2020-10-12 13:16:30,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14893 states. [2020-10-12 13:16:30,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14893 states to 14893 states and 19037 transitions. [2020-10-12 13:16:30,942 INFO L78 Accepts]: Start accepts. Automaton has 14893 states and 19037 transitions. Word has length 335 [2020-10-12 13:16:30,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:16:30,942 INFO L479 AbstractCegarLoop]: Abstraction has 14893 states and 19037 transitions. [2020-10-12 13:16:30,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:16:30,943 INFO L276 IsEmpty]: Start isEmpty. Operand 14893 states and 19037 transitions. [2020-10-12 13:16:30,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-12 13:16:30,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:16:30,958 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, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:16:30,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 13:16:30,959 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:16:30,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:16:30,959 INFO L82 PathProgramCache]: Analyzing trace with hash -466530078, now seen corresponding path program 1 times [2020-10-12 13:16:30,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:16:30,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845281303] [2020-10-12 13:16:30,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:16:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:31,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:31,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:31,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:32,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:34,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:34,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-10-12 13:16:34,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:16:34,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3673 [2020-10-12 13:16:34,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:34,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 13:16:34,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:16:34,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 286 [2020-10-12 13:16:34,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:34,907 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-10-12 13:16:34,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:16:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:34,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:34,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:34,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:16:34,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:34,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:16:34,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:34,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:16:34,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:34,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:16:34,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:34,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:16:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:34,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:35,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:35,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:16:35,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:35,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-12 13:16:35,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:35,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:35,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:35,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 13:16:35,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:35,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:16:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:35,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:35,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:35,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:16:35,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:35,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 13:16:35,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:35,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:16:35,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:35,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:16:35,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:35,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-12 13:16:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:35,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:35,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:35,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:35,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 13:16:35,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:16:35,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-12 13:16:35,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:35,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:16:35,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:35,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 13:16:35,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:36,168 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 157 proven. 224 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 13:16:36,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845281303] [2020-10-12 13:16:36,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:16:36,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 13:16:36,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613821678] [2020-10-12 13:16:36,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 13:16:36,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:16:36,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 13:16:36,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-12 13:16:36,170 INFO L87 Difference]: Start difference. First operand 14893 states and 19037 transitions. Second operand 14 states. [2020-10-12 13:16:37,094 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-10-12 13:16:37,309 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-10-12 13:16:37,529 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-10-12 13:16:38,017 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2020-10-12 13:16:38,371 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-12 13:16:38,612 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2020-10-12 13:16:38,797 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2020-10-12 13:16:39,023 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2020-10-12 13:16:39,283 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2020-10-12 13:16:40,631 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 30 [2020-10-12 13:16:42,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:16:42,236 INFO L93 Difference]: Finished difference Result 31961 states and 40765 transitions. [2020-10-12 13:16:42,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 13:16:42,238 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 338 [2020-10-12 13:16:42,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:16:42,271 INFO L225 Difference]: With dead ends: 31961 [2020-10-12 13:16:42,271 INFO L226 Difference]: Without dead ends: 17264 [2020-10-12 13:16:42,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=255, Invalid=801, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 13:16:42,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17264 states. [2020-10-12 13:16:42,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17264 to 17216. [2020-10-12 13:16:42,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17216 states. [2020-10-12 13:16:42,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17216 states to 17216 states and 21747 transitions. [2020-10-12 13:16:42,594 INFO L78 Accepts]: Start accepts. Automaton has 17216 states and 21747 transitions. Word has length 338 [2020-10-12 13:16:42,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:16:42,595 INFO L479 AbstractCegarLoop]: Abstraction has 17216 states and 21747 transitions. [2020-10-12 13:16:42,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 13:16:42,595 INFO L276 IsEmpty]: Start isEmpty. Operand 17216 states and 21747 transitions. [2020-10-12 13:16:42,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-12 13:16:42,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:16:42,609 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, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:16:42,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 13:16:42,609 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:16:42,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:16:42,610 INFO L82 PathProgramCache]: Analyzing trace with hash 294404731, now seen corresponding path program 1 times [2020-10-12 13:16:42,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:16:42,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877269417] [2020-10-12 13:16:42,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:16:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:42,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:43,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:43,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:44,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:44,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-12 13:16:44,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:16:44,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1409 [2020-10-12 13:16:44,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:44,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:44,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 234 [2020-10-12 13:16:44,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 13:16:44,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:44,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:16:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:44,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:44,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:44,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:16:44,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:44,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:16:44,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:44,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:44,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:44,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:44,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:44,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:16:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:44,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:44,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:44,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:16:44,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:44,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 13:16:44,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:44,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:44,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:44,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:44,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:44,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:16:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:44,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:44,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:44,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 13:16:44,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:44,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 13:16:44,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:44,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:16:44,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:44,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 13:16:44,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:44,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-12 13:16:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:44,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:44,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:44,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:44,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 13:16:44,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:16:44,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 13:16:44,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:44,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:44,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:44,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 13:16:44,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:44,563 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-12 13:16:44,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877269417] [2020-10-12 13:16:44,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:16:44,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:16:44,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336100928] [2020-10-12 13:16:44,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:16:44,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:16:44,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:16:44,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:16:44,567 INFO L87 Difference]: Start difference. First operand 17216 states and 21747 transitions. Second operand 7 states. [2020-10-12 13:16:48,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:16:48,226 INFO L93 Difference]: Finished difference Result 35175 states and 47771 transitions. [2020-10-12 13:16:48,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:16:48,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 350 [2020-10-12 13:16:48,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:16:48,301 INFO L225 Difference]: With dead ends: 35175 [2020-10-12 13:16:48,302 INFO L226 Difference]: Without dead ends: 20650 [2020-10-12 13:16:48,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:16:48,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20650 states. [2020-10-12 13:16:48,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20650 to 20316. [2020-10-12 13:16:48,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20316 states. [2020-10-12 13:16:48,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20316 states to 20316 states and 26472 transitions. [2020-10-12 13:16:48,785 INFO L78 Accepts]: Start accepts. Automaton has 20316 states and 26472 transitions. Word has length 350 [2020-10-12 13:16:48,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:16:48,785 INFO L479 AbstractCegarLoop]: Abstraction has 20316 states and 26472 transitions. [2020-10-12 13:16:48,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:16:48,785 INFO L276 IsEmpty]: Start isEmpty. Operand 20316 states and 26472 transitions. [2020-10-12 13:16:48,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-12 13:16:48,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:16:48,796 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:16:48,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 13:16:48,796 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:16:48,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:16:48,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1019934479, now seen corresponding path program 1 times [2020-10-12 13:16:48,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:16:48,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502971766] [2020-10-12 13:16:48,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:16:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:48,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:48,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:49,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:49,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:51,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:51,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 367 [2020-10-12 13:16:51,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:16:51,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2405 [2020-10-12 13:16:51,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:51,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:51,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-12 13:16:51,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 13:16:51,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:51,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:16:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:51,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:51,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:51,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:16:51,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:51,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:16:51,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:51,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:51,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:51,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:51,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:51,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:16:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:51,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:51,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:51,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:16:51,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:51,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 13:16:51,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:51,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:16:51,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:51,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:16:51,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:51,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:16:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:51,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:51,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:51,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 13:16:51,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:51,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-12 13:16:51,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:51,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:51,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:51,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 13:16:51,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:51,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-12 13:16:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:51,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:51,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:51,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 13:16:51,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:51,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 13:16:51,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:51,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:51,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-12 13:16:51,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:51,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:16:51,905 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 228 proven. 73 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-12 13:16:51,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502971766] [2020-10-12 13:16:51,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:16:51,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:16:51,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040773294] [2020-10-12 13:16:51,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:16:51,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:16:51,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:16:51,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:16:51,914 INFO L87 Difference]: Start difference. First operand 20316 states and 26472 transitions. Second operand 7 states. [2020-10-12 13:16:55,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:16:55,499 INFO L93 Difference]: Finished difference Result 41035 states and 53604 transitions. [2020-10-12 13:16:55,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 13:16:55,500 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 353 [2020-10-12 13:16:55,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:16:55,539 INFO L225 Difference]: With dead ends: 41035 [2020-10-12 13:16:55,539 INFO L226 Difference]: Without dead ends: 21103 [2020-10-12 13:16:55,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:16:55,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21103 states. [2020-10-12 13:16:56,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21103 to 20671. [2020-10-12 13:16:56,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20671 states. [2020-10-12 13:16:56,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20671 states to 20671 states and 26692 transitions. [2020-10-12 13:16:56,056 INFO L78 Accepts]: Start accepts. Automaton has 20671 states and 26692 transitions. Word has length 353 [2020-10-12 13:16:56,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:16:56,056 INFO L479 AbstractCegarLoop]: Abstraction has 20671 states and 26692 transitions. [2020-10-12 13:16:56,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:16:56,056 INFO L276 IsEmpty]: Start isEmpty. Operand 20671 states and 26692 transitions. [2020-10-12 13:16:56,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-12 13:16:56,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:16:56,065 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:16:56,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 13:16:56,065 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:16:56,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:16:56,065 INFO L82 PathProgramCache]: Analyzing trace with hash 164740197, now seen corresponding path program 1 times [2020-10-12 13:16:56,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:16:56,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662697026] [2020-10-12 13:16:56,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:16:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:56,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:56,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:56,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:56,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:57,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:59,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:59,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-12 13:16:59,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:16:59,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3657 [2020-10-12 13:16:59,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:59,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 13:16:59,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:16:59,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 315 [2020-10-12 13:16:59,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:59,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:16:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:59,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:59,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:59,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:16:59,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:59,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:16:59,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:59,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:16:59,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:59,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:16:59,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:59,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:16:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:59,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:59,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:00,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:00,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:17:00,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:17:00,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-12 13:17:00,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:00,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:17:00,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:17:00,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 13:17:00,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:00,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:17:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:00,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:00,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:00,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:00,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 13:17:00,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:17:00,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-12 13:17:00,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:00,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:17:00,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:17:00,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 13:17:00,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:00,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-12 13:17:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:00,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:00,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:00,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 13:17:00,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:00,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-12 13:17:00,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:00,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:17:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:17:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 13:17:00,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:00,568 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 232 proven. 83 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-12 13:17:00,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662697026] [2020-10-12 13:17:00,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:17:00,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:17:00,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022197911] [2020-10-12 13:17:00,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:17:00,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:17:00,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:17:00,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:17:00,570 INFO L87 Difference]: Start difference. First operand 20671 states and 26692 transitions. Second operand 8 states. [2020-10-12 13:17:03,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:17:03,347 INFO L93 Difference]: Finished difference Result 33521 states and 44046 transitions. [2020-10-12 13:17:03,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:17:03,349 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 363 [2020-10-12 13:17:03,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:17:03,378 INFO L225 Difference]: With dead ends: 33521 [2020-10-12 13:17:03,378 INFO L226 Difference]: Without dead ends: 13665 [2020-10-12 13:17:03,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:17:03,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13665 states. [2020-10-12 13:17:03,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13665 to 13103. [2020-10-12 13:17:03,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13103 states. [2020-10-12 13:17:03,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13103 states to 13103 states and 15239 transitions. [2020-10-12 13:17:03,750 INFO L78 Accepts]: Start accepts. Automaton has 13103 states and 15239 transitions. Word has length 363 [2020-10-12 13:17:03,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:17:03,750 INFO L479 AbstractCegarLoop]: Abstraction has 13103 states and 15239 transitions. [2020-10-12 13:17:03,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:17:03,751 INFO L276 IsEmpty]: Start isEmpty. Operand 13103 states and 15239 transitions. [2020-10-12 13:17:03,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-12 13:17:03,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:17:03,761 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, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:17:03,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 13:17:03,761 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:17:03,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:17:03,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1472204251, now seen corresponding path program 1 times [2020-10-12 13:17:03,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:17:03,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775655468] [2020-10-12 13:17:03,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:17:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:03,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:03,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:04,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:06,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:06,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-10-12 13:17:06,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:17:06,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2396 [2020-10-12 13:17:06,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:06,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:17:06,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:17:06,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:17:06,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:06,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:17:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:06,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:06,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:06,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:17:06,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:06,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:17:06,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:06,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:06,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:06,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:06,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:06,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:17:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:06,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:06,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:06,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:17:06,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:06,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-12 13:17:06,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:06,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:17:06,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:06,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:17:06,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:06,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:17:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:06,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:06,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:06,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 13:17:06,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:06,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-12 13:17:06,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:17:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:17:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 13:17:06,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:06,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-12 13:17:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:06,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:06,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:06,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 13:17:06,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:06,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 13:17:06,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:06,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:06,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-12 13:17:06,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:06,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:06,775 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 261 proven. 69 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-12 13:17:06,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775655468] [2020-10-12 13:17:06,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:17:06,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:17:06,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74102943] [2020-10-12 13:17:06,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:17:06,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:17:06,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:17:06,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:17:06,778 INFO L87 Difference]: Start difference. First operand 13103 states and 15239 transitions. Second operand 7 states. [2020-10-12 13:17:09,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:17:09,807 INFO L93 Difference]: Finished difference Result 30223 states and 35226 transitions. [2020-10-12 13:17:09,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:17:09,808 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 366 [2020-10-12 13:17:09,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:17:09,834 INFO L225 Difference]: With dead ends: 30223 [2020-10-12 13:17:09,834 INFO L226 Difference]: Without dead ends: 17504 [2020-10-12 13:17:09,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:17:09,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17504 states. [2020-10-12 13:17:10,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17504 to 16885. [2020-10-12 13:17:10,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16885 states. [2020-10-12 13:17:10,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16885 states to 16885 states and 19502 transitions. [2020-10-12 13:17:10,078 INFO L78 Accepts]: Start accepts. Automaton has 16885 states and 19502 transitions. Word has length 366 [2020-10-12 13:17:10,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:17:10,078 INFO L479 AbstractCegarLoop]: Abstraction has 16885 states and 19502 transitions. [2020-10-12 13:17:10,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:17:10,079 INFO L276 IsEmpty]: Start isEmpty. Operand 16885 states and 19502 transitions. [2020-10-12 13:17:10,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-12 13:17:10,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:17:10,090 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:17:10,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 13:17:10,093 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:17:10,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:17:10,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1595723634, now seen corresponding path program 1 times [2020-10-12 13:17:10,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:17:10,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708456573] [2020-10-12 13:17:10,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:17:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:10,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:10,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:10,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:10,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-12 13:17:10,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:17:10,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 677 [2020-10-12 13:17:10,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:10,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:17:10,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-12 13:17:10,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-12 13:17:10,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:10,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:17:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:10,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:10,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:10,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:17:10,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:10,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:17:10,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:10,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:10,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:10,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:10,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:10,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:17:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:11,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:11,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:11,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 13:17:11,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:11,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-12 13:17:11,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:11,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:17:11,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:11,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-12 13:17:11,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:11,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 13:17:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:11,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:11,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:11,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-12 13:17:11,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:11,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-12 13:17:11,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:11,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:17:11,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:17:11,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-12 13:17:11,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:11,870 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 232 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:17:11,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708456573] [2020-10-12 13:17:11,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:17:11,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:17:11,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922824061] [2020-10-12 13:17:11,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:17:11,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:17:11,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:17:11,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:17:11,874 INFO L87 Difference]: Start difference. First operand 16885 states and 19502 transitions. Second operand 8 states. [2020-10-12 13:17:14,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:17:14,871 INFO L93 Difference]: Finished difference Result 34743 states and 40095 transitions. [2020-10-12 13:17:14,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:17:14,872 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 371 [2020-10-12 13:17:14,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:17:14,901 INFO L225 Difference]: With dead ends: 34743 [2020-10-12 13:17:14,901 INFO L226 Difference]: Without dead ends: 18223 [2020-10-12 13:17:14,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:17:14,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18223 states. [2020-10-12 13:17:15,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18223 to 17987. [2020-10-12 13:17:15,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17987 states. [2020-10-12 13:17:15,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17987 states to 17987 states and 20624 transitions. [2020-10-12 13:17:15,157 INFO L78 Accepts]: Start accepts. Automaton has 17987 states and 20624 transitions. Word has length 371 [2020-10-12 13:17:15,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:17:15,157 INFO L479 AbstractCegarLoop]: Abstraction has 17987 states and 20624 transitions. [2020-10-12 13:17:15,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:17:15,157 INFO L276 IsEmpty]: Start isEmpty. Operand 17987 states and 20624 transitions. [2020-10-12 13:17:15,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-10-12 13:17:15,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:17:15,171 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:17:15,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 13:17:15,171 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:17:15,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:17:15,171 INFO L82 PathProgramCache]: Analyzing trace with hash 386937420, now seen corresponding path program 1 times [2020-10-12 13:17:15,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:17:15,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066103309] [2020-10-12 13:17:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:17:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:15,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:15,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:16,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:16,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-12 13:17:16,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:17:16,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1156 [2020-10-12 13:17:16,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:16,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:17:16,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 353 [2020-10-12 13:17:16,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 13:17:16,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:16,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:17:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:16,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:16,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:16,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:17:16,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:16,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:17:16,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:16,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:16,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:16,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:16,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:16,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:17:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:16,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:16,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:16,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:17:16,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:16,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 13:17:16,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:16,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:16,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:16,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:16,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:16,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:17:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:16,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:16,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:16,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-12 13:17:16,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:16,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 13:17:16,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:16,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:16,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:16,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:16,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:16,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-12 13:17:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:16,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:16,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:16,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 13:17:16,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:16,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 13:17:16,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:16,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:17:16,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:16,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 13:17:16,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:16,746 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 156 proven. 3 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2020-10-12 13:17:16,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066103309] [2020-10-12 13:17:16,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:17:16,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:17:16,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777852848] [2020-10-12 13:17:16,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:17:16,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:17:16,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:17:16,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:17:16,747 INFO L87 Difference]: Start difference. First operand 17987 states and 20624 transitions. Second operand 6 states. [2020-10-12 13:17:20,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:17:20,349 INFO L93 Difference]: Finished difference Result 35814 states and 41059 transitions. [2020-10-12 13:17:20,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:17:20,350 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 397 [2020-10-12 13:17:20,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:17:20,380 INFO L225 Difference]: With dead ends: 35814 [2020-10-12 13:17:20,380 INFO L226 Difference]: Without dead ends: 18021 [2020-10-12 13:17:20,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:17:20,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18021 states. [2020-10-12 13:17:20,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18021 to 17597. [2020-10-12 13:17:20,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17597 states. [2020-10-12 13:17:20,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17597 states to 17597 states and 19747 transitions. [2020-10-12 13:17:20,641 INFO L78 Accepts]: Start accepts. Automaton has 17597 states and 19747 transitions. Word has length 397 [2020-10-12 13:17:20,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:17:20,641 INFO L479 AbstractCegarLoop]: Abstraction has 17597 states and 19747 transitions. [2020-10-12 13:17:20,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:17:20,642 INFO L276 IsEmpty]: Start isEmpty. Operand 17597 states and 19747 transitions. [2020-10-12 13:17:20,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2020-10-12 13:17:20,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:17:20,658 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:17:20,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 13:17:20,659 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:17:20,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:17:20,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1408385638, now seen corresponding path program 1 times [2020-10-12 13:17:20,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:17:20,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782054390] [2020-10-12 13:17:20,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:17:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:20,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:20,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:21,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:21,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:25,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:25,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 449 [2020-10-12 13:17:25,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:17:25,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 13:17:25,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:25,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:17:25,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-12 13:17:25,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-12 13:17:25,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:25,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:17:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:25,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:25,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:25,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:17:25,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:25,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:17:25,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:25,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:25,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:25,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:25,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:25,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:17:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:25,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:25,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:25,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 13:17:25,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:25,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 13:17:25,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:25,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:17:25,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:25,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-12 13:17:25,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:26,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 13:17:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:26,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:26,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:26,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-12 13:17:26,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:26,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-12 13:17:26,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:26,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:17:26,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:17:26,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-12 13:17:26,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:17:26,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-12 13:17:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:26,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:26,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:26,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 13:17:26,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:26,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 13:17:26,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:26,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:26,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 13:17:26,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:26,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:26,788 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 297 proven. 86 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-12 13:17:26,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782054390] [2020-10-12 13:17:26,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:17:26,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:17:26,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087541745] [2020-10-12 13:17:26,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:17:26,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:17:26,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:17:26,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:17:26,797 INFO L87 Difference]: Start difference. First operand 17597 states and 19747 transitions. Second operand 7 states. [2020-10-12 13:17:30,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:17:30,243 INFO L93 Difference]: Finished difference Result 35815 states and 40862 transitions. [2020-10-12 13:17:30,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:17:30,246 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 435 [2020-10-12 13:17:30,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:17:30,296 INFO L225 Difference]: With dead ends: 35815 [2020-10-12 13:17:30,296 INFO L226 Difference]: Without dead ends: 18412 [2020-10-12 13:17:30,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:17:30,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18412 states. [2020-10-12 13:17:30,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18412 to 18165. [2020-10-12 13:17:30,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18165 states. [2020-10-12 13:17:30,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18165 states to 18165 states and 20300 transitions. [2020-10-12 13:17:30,662 INFO L78 Accepts]: Start accepts. Automaton has 18165 states and 20300 transitions. Word has length 435 [2020-10-12 13:17:30,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:17:30,663 INFO L479 AbstractCegarLoop]: Abstraction has 18165 states and 20300 transitions. [2020-10-12 13:17:30,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:17:30,663 INFO L276 IsEmpty]: Start isEmpty. Operand 18165 states and 20300 transitions. [2020-10-12 13:17:30,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2020-10-12 13:17:30,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:17:30,674 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, 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, 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] [2020-10-12 13:17:30,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 13:17:30,675 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:17:30,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:17:30,675 INFO L82 PathProgramCache]: Analyzing trace with hash 915748287, now seen corresponding path program 1 times [2020-10-12 13:17:30,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:17:30,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941389042] [2020-10-12 13:17:30,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:17:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:30,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:31,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:32,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:34,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:34,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 473 [2020-10-12 13:17:34,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:17:34,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3550 [2020-10-12 13:17:34,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:34,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:17:34,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-12 13:17:34,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-12 13:17:34,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:34,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:17:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:34,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:34,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:34,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:17:34,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:34,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:17:34,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:34,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:34,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:34,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:34,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:34,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:17:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:34,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:34,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:34,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:17:34,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:34,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 13:17:34,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:34,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:34,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:34,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:34,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:34,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:17:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:34,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:34,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:34,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:17:34,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:34,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 13:17:34,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:34,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:17:34,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:34,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 13:17:34,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:34,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-12 13:17:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:34,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:35,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:35,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-12 13:17:35,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:35,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-12 13:17:35,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:35,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:17:35,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:17:35,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-12 13:17:35,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:35,703 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 372 proven. 17 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-12 13:17:35,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941389042] [2020-10-12 13:17:35,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:17:35,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:17:35,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052369822] [2020-10-12 13:17:35,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:17:35,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:17:35,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:17:35,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:17:35,705 INFO L87 Difference]: Start difference. First operand 18165 states and 20300 transitions. Second operand 8 states. [2020-10-12 13:17:38,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:17:38,849 INFO L93 Difference]: Finished difference Result 35033 states and 39165 transitions. [2020-10-12 13:17:38,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:17:38,850 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 459 [2020-10-12 13:17:38,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:17:38,880 INFO L225 Difference]: With dead ends: 35033 [2020-10-12 13:17:38,880 INFO L226 Difference]: Without dead ends: 19537 [2020-10-12 13:17:38,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:17:38,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19537 states. [2020-10-12 13:17:39,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19537 to 18731. [2020-10-12 13:17:39,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18731 states. [2020-10-12 13:17:39,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18731 states to 18731 states and 20858 transitions. [2020-10-12 13:17:39,155 INFO L78 Accepts]: Start accepts. Automaton has 18731 states and 20858 transitions. Word has length 459 [2020-10-12 13:17:39,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:17:39,156 INFO L479 AbstractCegarLoop]: Abstraction has 18731 states and 20858 transitions. [2020-10-12 13:17:39,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:17:39,156 INFO L276 IsEmpty]: Start isEmpty. Operand 18731 states and 20858 transitions. [2020-10-12 13:17:39,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2020-10-12 13:17:39,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:17:39,171 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:17:39,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 13:17:39,171 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:17:39,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:17:39,172 INFO L82 PathProgramCache]: Analyzing trace with hash -640727957, now seen corresponding path program 1 times [2020-10-12 13:17:39,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:17:39,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663974518] [2020-10-12 13:17:39,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:17:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:39,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:39,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:39,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:41,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:41,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 487 [2020-10-12 13:17:41,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:17:41,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2041 [2020-10-12 13:17:41,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:17:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 340 [2020-10-12 13:17:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 13:17:41,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:41,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:17:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:41,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:41,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:41,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:17:41,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:41,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:17:41,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:41,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:41,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:41,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:41,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:41,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:17:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:41,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:41,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:41,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-12 13:17:41,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:41,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 13:17:41,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:41,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:41,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:41,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:41,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-12 13:17:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:41,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:41,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:41,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-12 13:17:41,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:41,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-12 13:17:41,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:41,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:17:41,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:41,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-12 13:17:41,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:41,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-10-12 13:17:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:41,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:41,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:41,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:41,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 13:17:41,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:17:41,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-12 13:17:41,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:41,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:17:41,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:17:41,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 13:17:41,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:42,367 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-12 13:17:42,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663974518] [2020-10-12 13:17:42,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:17:42,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:17:42,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707749792] [2020-10-12 13:17:42,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:17:42,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:17:42,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:17:42,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:17:42,369 INFO L87 Difference]: Start difference. First operand 18731 states and 20858 transitions. Second operand 7 states. [2020-10-12 13:17:44,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:17:44,616 INFO L93 Difference]: Finished difference Result 34849 states and 38860 transitions. [2020-10-12 13:17:44,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 13:17:44,618 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 473 [2020-10-12 13:17:44,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:17:44,658 INFO L225 Difference]: With dead ends: 34849 [2020-10-12 13:17:44,658 INFO L226 Difference]: Without dead ends: 18793 [2020-10-12 13:17:44,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:17:44,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18793 states. [2020-10-12 13:17:44,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18793 to 18729. [2020-10-12 13:17:44,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18729 states. [2020-10-12 13:17:44,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18729 states to 18729 states and 20787 transitions. [2020-10-12 13:17:44,896 INFO L78 Accepts]: Start accepts. Automaton has 18729 states and 20787 transitions. Word has length 473 [2020-10-12 13:17:44,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:17:44,897 INFO L479 AbstractCegarLoop]: Abstraction has 18729 states and 20787 transitions. [2020-10-12 13:17:44,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:17:44,897 INFO L276 IsEmpty]: Start isEmpty. Operand 18729 states and 20787 transitions. [2020-10-12 13:17:44,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2020-10-12 13:17:44,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:17:44,907 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, 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, 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] [2020-10-12 13:17:44,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 13:17:44,908 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:17:44,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:17:44,908 INFO L82 PathProgramCache]: Analyzing trace with hash 690620991, now seen corresponding path program 1 times [2020-10-12 13:17:44,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:17:44,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775949135] [2020-10-12 13:17:44,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:17:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:45,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:45,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:46,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:46,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:46,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:48,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:48,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 504 [2020-10-12 13:17:48,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:17:48,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3688 [2020-10-12 13:17:48,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:48,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 13:17:48,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:17:48,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 498 [2020-10-12 13:17:48,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:48,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:17:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:48,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:48,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:48,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:17:48,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:48,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:17:48,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:48,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:17:48,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:48,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:17:48,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:48,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:17:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:48,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:49,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:49,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:17:49,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:49,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-12 13:17:49,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:49,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:17:49,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:17:49,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-12 13:17:49,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:49,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:17:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:49,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:49,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:49,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 13:17:49,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:49,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-12 13:17:49,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:49,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:17:49,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:17:49,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-12 13:17:49,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:49,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-12 13:17:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:49,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:49,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:49,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:17:49,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:49,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-12 13:17:49,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:49,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:17:49,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:17:49,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-12 13:17:49,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:49,884 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 253 proven. 155 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-12 13:17:49,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775949135] [2020-10-12 13:17:49,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:17:49,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 13:17:49,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728710690] [2020-10-12 13:17:49,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 13:17:49,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:17:49,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 13:17:49,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:17:49,886 INFO L87 Difference]: Start difference. First operand 18729 states and 20787 transitions. Second operand 11 states. [2020-10-12 13:17:55,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:17:55,661 INFO L93 Difference]: Finished difference Result 46047 states and 51285 transitions. [2020-10-12 13:17:55,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 13:17:55,663 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 490 [2020-10-12 13:17:55,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:17:55,715 INFO L225 Difference]: With dead ends: 46047 [2020-10-12 13:17:55,716 INFO L226 Difference]: Without dead ends: 30006 [2020-10-12 13:17:55,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-10-12 13:17:55,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30006 states. [2020-10-12 13:17:56,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30006 to 28149. [2020-10-12 13:17:56,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28149 states. [2020-10-12 13:17:56,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28149 states to 28149 states and 31252 transitions. [2020-10-12 13:17:56,105 INFO L78 Accepts]: Start accepts. Automaton has 28149 states and 31252 transitions. Word has length 490 [2020-10-12 13:17:56,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:17:56,105 INFO L479 AbstractCegarLoop]: Abstraction has 28149 states and 31252 transitions. [2020-10-12 13:17:56,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 13:17:56,105 INFO L276 IsEmpty]: Start isEmpty. Operand 28149 states and 31252 transitions. [2020-10-12 13:17:56,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2020-10-12 13:17:56,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:17:56,119 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:17:56,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 13:17:56,120 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:17:56,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:17:56,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1585918247, now seen corresponding path program 1 times [2020-10-12 13:17:56,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:17:56,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616045844] [2020-10-12 13:17:56,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:17:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:56,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:56,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:56,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:57,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:57,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:58,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:00,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:00,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 526 [2020-10-12 13:18:00,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 13:18:00,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4239 [2020-10-12 13:18:00,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:00,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:18:00,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-12 13:18:00,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-12 13:18:00,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:00,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:18:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:00,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:00,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:00,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:18:00,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:00,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:18:00,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:00,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:18:00,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:00,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:18:00,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:00,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:18:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:00,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:00,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:00,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 13:18:00,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:00,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 13:18:00,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:00,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:18:00,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:00,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:18:00,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:00,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-12 13:18:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:00,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:00,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:00,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 13:18:00,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:00,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 13:18:00,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:00,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:18:00,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 13:18:00,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:00,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-12 13:18:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:00,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:00,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:00,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:00,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 13:18:00,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:18:00,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-12 13:18:00,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:00,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:18:00,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:18:00,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 13:18:00,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:00,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-10-12 13:18:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:00,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:00,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:00,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 13:18:00,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:00,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 13:18:00,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:00,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:18:00,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:18:00,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 13:18:00,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:01,112 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 552 proven. 6 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-10-12 13:18:01,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616045844] [2020-10-12 13:18:01,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:18:01,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:18:01,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560969339] [2020-10-12 13:18:01,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:18:01,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:18:01,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:18:01,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:18:01,114 INFO L87 Difference]: Start difference. First operand 28149 states and 31252 transitions. Second operand 7 states. [2020-10-12 13:18:05,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:18:05,496 INFO L93 Difference]: Finished difference Result 54455 states and 60512 transitions. [2020-10-12 13:18:05,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:18:05,497 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 510 [2020-10-12 13:18:05,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:18:05,542 INFO L225 Difference]: With dead ends: 54455 [2020-10-12 13:18:05,543 INFO L226 Difference]: Without dead ends: 28998 [2020-10-12 13:18:05,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:18:05,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28998 states. [2020-10-12 13:18:05,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28998 to 28150. [2020-10-12 13:18:05,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28150 states. [2020-10-12 13:18:05,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28150 states to 28150 states and 31223 transitions. [2020-10-12 13:18:05,889 INFO L78 Accepts]: Start accepts. Automaton has 28150 states and 31223 transitions. Word has length 510 [2020-10-12 13:18:05,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:18:05,889 INFO L479 AbstractCegarLoop]: Abstraction has 28150 states and 31223 transitions. [2020-10-12 13:18:05,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:18:05,890 INFO L276 IsEmpty]: Start isEmpty. Operand 28150 states and 31223 transitions. [2020-10-12 13:18:05,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2020-10-12 13:18:05,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:18:05,908 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, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:18:05,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 13:18:05,908 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:18:05,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:18:05,909 INFO L82 PathProgramCache]: Analyzing trace with hash -925740132, now seen corresponding path program 1 times [2020-10-12 13:18:05,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:18:05,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037897234] [2020-10-12 13:18:05,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:18:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:06,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:06,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:06,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:07,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:11,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:11,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 530 [2020-10-12 13:18:11,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:18:11,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 13:18:11,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:11,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 13:18:11,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 344 [2020-10-12 13:18:11,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-12 13:18:11,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:11,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:18:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:11,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:11,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:11,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:18:11,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:11,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:18:11,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:11,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:18:11,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:11,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:18:11,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:11,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:18:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:11,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:11,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:11,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:18:11,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:11,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 13:18:11,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:11,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:18:11,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:11,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:18:11,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:11,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:18:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:11,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:11,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:11,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:18:11,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:11,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 13:18:11,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:11,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:18:11,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:11,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:18:11,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:11,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-12 13:18:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:11,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:11,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:11,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:18:11,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:11,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 13:18:11,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:11,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:18:11,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:11,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 13:18:11,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:11,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-12 13:18:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:11,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:11,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:11,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:11,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:18:11,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:18:11,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-12 13:18:11,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:11,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:18:11,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:18:11,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-12 13:18:11,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:12,387 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 487 proven. 50 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-12 13:18:12,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037897234] [2020-10-12 13:18:12,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:18:12,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 13:18:12,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795854340] [2020-10-12 13:18:12,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 13:18:12,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:18:12,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 13:18:12,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:18:12,389 INFO L87 Difference]: Start difference. First operand 28150 states and 31223 transitions. Second operand 11 states. [2020-10-12 13:18:12,597 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-10-12 13:18:13,113 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-10-12 13:18:13,770 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-10-12 13:18:13,965 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-10-12 13:18:14,212 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-12 13:18:14,363 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2020-10-12 13:18:16,674 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-10-12 13:18:16,897 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-10-12 13:18:17,454 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-12 13:18:19,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:18:19,475 INFO L93 Difference]: Finished difference Result 31584 states and 35048 transitions. [2020-10-12 13:18:19,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 13:18:19,477 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 514 [2020-10-12 13:18:19,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:18:19,478 INFO L225 Difference]: With dead ends: 31584 [2020-10-12 13:18:19,478 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 13:18:19,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=198, Invalid=504, Unknown=0, NotChecked=0, Total=702 [2020-10-12 13:18:19,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 13:18:19,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 13:18:19,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 13:18:19,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 13:18:19,505 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 514 [2020-10-12 13:18:19,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:18:19,505 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 13:18:19,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 13:18:19,505 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 13:18:19,506 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 13:18:19,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 13:18:19,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 13:18:25,028 WARN L193 SmtUtils]: Spent 2.78 s on a formula simplification. DAG size of input: 1013 DAG size of output: 883 [2020-10-12 13:18:27,391 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 1013 DAG size of output: 883 [2020-10-12 13:18:27,576 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 33 [2020-10-12 13:18:38,002 WARN L193 SmtUtils]: Spent 10.38 s on a formula simplification. DAG size of input: 760 DAG size of output: 183