/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/Problem03_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:30:03,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:30:03,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:30:03,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:30:03,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:30:03,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:30:03,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:30:03,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:30:03,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:30:03,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:30:03,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:30:03,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:30:03,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:30:03,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:30:03,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:30:03,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:30:03,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:30:03,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:30:03,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:30:03,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:30:03,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:30:03,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:30:03,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:30:03,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:30:03,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:30:03,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:30:03,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:30:03,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:30:03,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:30:03,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:30:03,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:30:03,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:30:03,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:30:03,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:30:03,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:30:03,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:30:03,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:30:03,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:30:03,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:30:03,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:30:03,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:30:03,486 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 11:30:03,509 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:30:03,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:30:03,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:30:03,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:30:03,511 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:30:03,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:30:03,511 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:30:03,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:30:03,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:30:03,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:30:03,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:30:03,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:30:03,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:30:03,513 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:30:03,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:30:03,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:30:03,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:30:03,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:30:03,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:30:03,514 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:30:03,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:30:03,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:30:03,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:30:03,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:30:03,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:30:03,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:30:03,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:30:03,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:30:03,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:30:03,516 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 11:30:03,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:30:03,849 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:30:03,852 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:30:03,854 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:30:03,855 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:30:03,856 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label58.c [2020-10-12 11:30:03,919 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edbcdf5d7/704ee0c17c02468584d867bbbcc5f5ce/FLAGe684680c3 [2020-10-12 11:30:04,470 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:30:04,472 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label58.c [2020-10-12 11:30:04,490 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edbcdf5d7/704ee0c17c02468584d867bbbcc5f5ce/FLAGe684680c3 [2020-10-12 11:30:04,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edbcdf5d7/704ee0c17c02468584d867bbbcc5f5ce [2020-10-12 11:30:04,707 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:30:04,709 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:30:04,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:30:04,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:30:04,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:30:04,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:30:04" (1/1) ... [2020-10-12 11:30:04,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a529ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:30:04, skipping insertion in model container [2020-10-12 11:30:04,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:30:04" (1/1) ... [2020-10-12 11:30:04,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:30:04,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:30:05,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:30:05,607 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:30:05,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:30:05,884 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:30:05,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:30:05 WrapperNode [2020-10-12 11:30:05,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:30:05,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:30:05,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:30:05,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:30:05,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:30:05" (1/1) ... [2020-10-12 11:30:05,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:30:05" (1/1) ... [2020-10-12 11:30:05,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:30:05" (1/1) ... [2020-10-12 11:30:05,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:30:05" (1/1) ... [2020-10-12 11:30:05,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:30:05" (1/1) ... [2020-10-12 11:30:06,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:30:05" (1/1) ... [2020-10-12 11:30:06,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:30:05" (1/1) ... [2020-10-12 11:30:06,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:30:06,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:30:06,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:30:06,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:30:06,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:30:05" (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 11:30:06,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:30:06,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:30:06,119 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:30:06,119 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:30:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:30:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:30:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:30:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:30:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:30:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:30:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:30:08,029 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:30:08,030 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:30:08,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:30:08 BoogieIcfgContainer [2020-10-12 11:30:08,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:30:08,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:30:08,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:30:08,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:30:08,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:30:04" (1/3) ... [2020-10-12 11:30:08,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1cc558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:30:08, skipping insertion in model container [2020-10-12 11:30:08,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:30:05" (2/3) ... [2020-10-12 11:30:08,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1cc558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:30:08, skipping insertion in model container [2020-10-12 11:30:08,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:30:08" (3/3) ... [2020-10-12 11:30:08,058 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label58.c [2020-10-12 11:30:08,073 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:30:08,087 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:30:08,105 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:30:08,142 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:30:08,143 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:30:08,143 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:30:08,144 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:30:08,144 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:30:08,144 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:30:08,144 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:30:08,144 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:30:08,183 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-12 11:30:08,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-12 11:30:08,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:30:08,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:30:08,213 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:30:08,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:30:08,221 INFO L82 PathProgramCache]: Analyzing trace with hash 321643717, now seen corresponding path program 1 times [2020-10-12 11:30:08,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:30:08,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262752863] [2020-10-12 11:30:08,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:30:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:08,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:09,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:12,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:12,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 11:30:12,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:30:12,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3772 [2020-10-12 11:30:12,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:12,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 11:30:12,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:30:12,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 11:30:12,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:30:13,500 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2020-10-12 11:30:13,753 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2020-10-12 11:30:13,879 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-12 11:30:14,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:30:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:14,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:14,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:14,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:30:14,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:14,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 11:30:14,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:14,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:30:14,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:30:14,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:30:14,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:14,702 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 11:30:14,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262752863] [2020-10-12 11:30:14,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:30:14,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 11:30:14,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197665804] [2020-10-12 11:30:14,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 11:30:14,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:30:14,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 11:30:14,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:30:14,727 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 12 states. [2020-10-12 11:30:15,061 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-12 11:30:15,610 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 166 [2020-10-12 11:30:16,127 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 166 [2020-10-12 11:30:16,733 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 174 [2020-10-12 11:30:17,633 WARN L193 SmtUtils]: Spent 797.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 173 [2020-10-12 11:30:18,763 WARN L193 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 172 [2020-10-12 11:30:19,952 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 171 [2020-10-12 11:30:22,608 WARN L193 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 170 [2020-10-12 11:30:23,670 WARN L193 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 169 [2020-10-12 11:30:26,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:30:26,072 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-12 11:30:26,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:30:26,074 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 166 [2020-10-12 11:30:26,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:30:26,092 INFO L225 Difference]: With dead ends: 737 [2020-10-12 11:30:26,092 INFO L226 Difference]: Without dead ends: 364 [2020-10-12 11:30:26,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-12 11:30:26,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-12 11:30:26,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-12 11:30:26,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-12 11:30:26,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-12 11:30:26,172 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 166 [2020-10-12 11:30:26,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:30:26,173 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-12 11:30:26,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 11:30:26,173 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-12 11:30:26,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-12 11:30:26,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:30:26,179 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:30:26,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:30:26,179 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:30:26,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:30:26,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1168220610, now seen corresponding path program 1 times [2020-10-12 11:30:26,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:30:26,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486771688] [2020-10-12 11:30:26,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:30:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:26,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:26,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:30,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:30,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-12 11:30:30,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:30:30,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4484 [2020-10-12 11:30:30,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:30,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 11:30:30,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:30:30,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-12 11:30:30,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 11:30:31,448 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-12 11:30:31,565 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-12 11:30:31,688 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-12 11:30:31,813 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-12 11:30:32,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:30:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:32,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:32,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:32,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:30:32,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:32,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 11:30:32,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:32,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:30:32,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:30:32,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:30:32,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:32,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:30:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:32,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:32,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:32,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:30:32,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:32,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 11:30:32,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:32,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:30:32,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:30:32,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:30:32,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:32,839 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2020-10-12 11:30:33,876 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:30:33,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486771688] [2020-10-12 11:30:33,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:30:33,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 11:30:33,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743444599] [2020-10-12 11:30:33,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:30:33,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:30:33,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:30:33,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:30:33,887 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 17 states. [2020-10-12 11:30:34,259 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-12 11:30:34,842 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 89 [2020-10-12 11:30:35,112 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2020-10-12 11:30:35,467 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 92 [2020-10-12 11:30:36,051 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 170 [2020-10-12 11:30:36,667 WARN L193 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 178 [2020-10-12 11:30:37,658 WARN L193 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 177 [2020-10-12 11:30:39,380 WARN L193 SmtUtils]: Spent 830.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 176 [2020-10-12 11:30:41,633 WARN L193 SmtUtils]: Spent 840.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 175 [2020-10-12 11:30:44,392 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 174 [2020-10-12 11:30:45,253 WARN L193 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 172 [2020-10-12 11:30:49,282 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2020-10-12 11:30:49,450 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2020-10-12 11:30:49,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:30:49,505 INFO L93 Difference]: Finished difference Result 983 states and 1596 transitions. [2020-10-12 11:30:49,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 11:30:49,506 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 177 [2020-10-12 11:30:49,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:30:49,515 INFO L225 Difference]: With dead ends: 983 [2020-10-12 11:30:49,515 INFO L226 Difference]: Without dead ends: 740 [2020-10-12 11:30:49,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=239, Invalid=691, Unknown=0, NotChecked=0, Total=930 [2020-10-12 11:30:49,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2020-10-12 11:30:49,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 720. [2020-10-12 11:30:49,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 720 states. [2020-10-12 11:30:49,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 955 transitions. [2020-10-12 11:30:49,570 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 955 transitions. Word has length 177 [2020-10-12 11:30:49,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:30:49,571 INFO L479 AbstractCegarLoop]: Abstraction has 720 states and 955 transitions. [2020-10-12 11:30:49,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 11:30:49,571 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 955 transitions. [2020-10-12 11:30:49,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-12 11:30:49,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:30:49,577 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:30:49,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:30:49,577 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:30:49,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:30:49,578 INFO L82 PathProgramCache]: Analyzing trace with hash 2134429066, now seen corresponding path program 1 times [2020-10-12 11:30:49,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:30:49,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908080829] [2020-10-12 11:30:49,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:30:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:49,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:49,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:51,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:51,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-12 11:30:51,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:30:51,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1507 [2020-10-12 11:30:51,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:51,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:30:51,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:30:51,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-12 11:30:51,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:30:51,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:30:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:51,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:51,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:51,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:30:51,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:51,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 11:30:51,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:51,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:30:51,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:30:51,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:30:51,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:51,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:30:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:51,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:51,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:51,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:51,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:30:51,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:30:51,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-12 11:30:51,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:51,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:30:51,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:30:51,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:30:51,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:51,774 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 11:30:51,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908080829] [2020-10-12 11:30:51,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:30:51,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:30:51,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298728221] [2020-10-12 11:30:51,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:30:51,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:30:51,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:30:51,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:30:51,777 INFO L87 Difference]: Start difference. First operand 720 states and 955 transitions. Second operand 6 states. [2020-10-12 11:30:51,931 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:30:54,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:30:54,462 INFO L93 Difference]: Finished difference Result 1436 states and 2064 transitions. [2020-10-12 11:30:54,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:30:54,464 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2020-10-12 11:30:54,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:30:54,471 INFO L225 Difference]: With dead ends: 1436 [2020-10-12 11:30:54,471 INFO L226 Difference]: Without dead ends: 1190 [2020-10-12 11:30:54,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:30:54,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2020-10-12 11:30:54,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1182. [2020-10-12 11:30:54,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1182 states. [2020-10-12 11:30:54,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1619 transitions. [2020-10-12 11:30:54,519 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1619 transitions. Word has length 187 [2020-10-12 11:30:54,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:30:54,520 INFO L479 AbstractCegarLoop]: Abstraction has 1182 states and 1619 transitions. [2020-10-12 11:30:54,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:30:54,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1619 transitions. [2020-10-12 11:30:54,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-12 11:30:54,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:30:54,526 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:30:54,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:30:54,527 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:30:54,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:30:54,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1812964547, now seen corresponding path program 1 times [2020-10-12 11:30:54,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:30:54,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122034870] [2020-10-12 11:30:54,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:30:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:54,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:54,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:55,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:58,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:58,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:58,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-12 11:30:58,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:30:58,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4032 [2020-10-12 11:30:58,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:58,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:30:58,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:30:58,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 11:30:58,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:58,773 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:30:58,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:30:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:58,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:58,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:58,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:30:58,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:58,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 11:30:58,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:58,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:30:58,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:30:58,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:30:58,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:30:58,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:30:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:58,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:59,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:59,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:30:59,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:59,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-12 11:30:59,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:59,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:30:59,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:30:59,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:30:59,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:30:59,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:30:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:59,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:59,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:59,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 11:30:59,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:59,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 11:30:59,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:59,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:30:59,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:30:59,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 11:30:59,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:30:59,203 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 11:30:59,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122034870] [2020-10-12 11:30:59,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:30:59,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:30:59,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892844402] [2020-10-12 11:30:59,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:30:59,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:30:59,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:30:59,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:30:59,207 INFO L87 Difference]: Start difference. First operand 1182 states and 1619 transitions. Second operand 8 states. [2020-10-12 11:30:59,401 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:31:00,022 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:31:03,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:31:03,429 INFO L93 Difference]: Finished difference Result 2663 states and 4047 transitions. [2020-10-12 11:31:03,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:31:03,429 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2020-10-12 11:31:03,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:31:03,441 INFO L225 Difference]: With dead ends: 2663 [2020-10-12 11:31:03,442 INFO L226 Difference]: Without dead ends: 2167 [2020-10-12 11:31:03,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:31:03,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2020-10-12 11:31:03,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 2143. [2020-10-12 11:31:03,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2143 states. [2020-10-12 11:31:03,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2143 states to 2143 states and 3194 transitions. [2020-10-12 11:31:03,535 INFO L78 Accepts]: Start accepts. Automaton has 2143 states and 3194 transitions. Word has length 196 [2020-10-12 11:31:03,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:31:03,536 INFO L479 AbstractCegarLoop]: Abstraction has 2143 states and 3194 transitions. [2020-10-12 11:31:03,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:31:03,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2143 states and 3194 transitions. [2020-10-12 11:31:03,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-12 11:31:03,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:31:03,544 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:31:03,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:31:03,545 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:31:03,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:31:03,545 INFO L82 PathProgramCache]: Analyzing trace with hash 2019866713, now seen corresponding path program 1 times [2020-10-12 11:31:03,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:31:03,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321227035] [2020-10-12 11:31:03,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:31:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:03,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:03,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:04,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:05,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:05,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-12 11:31:05,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:31:05,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1744 [2020-10-12 11:31:05,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:05,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 11:31:05,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:31:05,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-12 11:31:05,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:05,541 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:31:05,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:31:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:05,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:05,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:05,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:31:05,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:31:05,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:31:05,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:05,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:31:05,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:31:05,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:31:05,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-12 11:31:05,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:31:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:05,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:05,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:05,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:31:05,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:31:05,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 11:31:05,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:05,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:31:05,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:31:05,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:31:05,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:05,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:31:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:05,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:05,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:05,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:31:05,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:31:05,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 11:31:05,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:05,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:31:05,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:31:05,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:31:05,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:05,889 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:31:05,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321227035] [2020-10-12 11:31:05,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:31:05,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:31:05,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738595984] [2020-10-12 11:31:05,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:31:05,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:31:05,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:31:05,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:31:05,891 INFO L87 Difference]: Start difference. First operand 2143 states and 3194 transitions. Second operand 9 states. [2020-10-12 11:31:06,043 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:31:06,307 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:31:07,353 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:31:11,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:31:11,234 INFO L93 Difference]: Finished difference Result 7771 states and 13074 transitions. [2020-10-12 11:31:11,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 11:31:11,235 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 198 [2020-10-12 11:31:11,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:31:11,285 INFO L225 Difference]: With dead ends: 7771 [2020-10-12 11:31:11,286 INFO L226 Difference]: Without dead ends: 6314 [2020-10-12 11:31:11,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:31:11,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6314 states. [2020-10-12 11:31:11,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6314 to 6187. [2020-10-12 11:31:11,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6187 states. [2020-10-12 11:31:11,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6187 states to 6187 states and 9633 transitions. [2020-10-12 11:31:11,507 INFO L78 Accepts]: Start accepts. Automaton has 6187 states and 9633 transitions. Word has length 198 [2020-10-12 11:31:11,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:31:11,507 INFO L479 AbstractCegarLoop]: Abstraction has 6187 states and 9633 transitions. [2020-10-12 11:31:11,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 11:31:11,508 INFO L276 IsEmpty]: Start isEmpty. Operand 6187 states and 9633 transitions. [2020-10-12 11:31:11,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-12 11:31:11,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:31:11,524 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:31:11,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:31:11,524 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:31:11,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:31:11,525 INFO L82 PathProgramCache]: Analyzing trace with hash 2031812525, now seen corresponding path program 1 times [2020-10-12 11:31:11,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:31:11,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815447158] [2020-10-12 11:31:11,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:31:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:11,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:11,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:12,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:12,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:12,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-12 11:31:12,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:31:12,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1345 [2020-10-12 11:31:12,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:12,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:31:12,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:31:12,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 11:31:12,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:13,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:31:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:13,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:13,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:13,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:31:13,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:31:13,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:31:13,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:13,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:31:13,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:31:13,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:31:13,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:13,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:31:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:13,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:13,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:13,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:13,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:31:13,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:31:13,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 11:31:13,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:13,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:31:13,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:31:13,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:31:13,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:13,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:31:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:13,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:13,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:13,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:31:13,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:31:13,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 11:31:13,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:13,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:31:13,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:31:13,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:31:13,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:31:13,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815447158] [2020-10-12 11:31:13,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:31:13,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:31:13,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665946184] [2020-10-12 11:31:13,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:31:13,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:31:13,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:31:13,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:31:13,294 INFO L87 Difference]: Start difference. First operand 6187 states and 9633 transitions. Second operand 8 states. [2020-10-12 11:31:13,426 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:31:15,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:31:15,016 INFO L93 Difference]: Finished difference Result 11525 states and 18320 transitions. [2020-10-12 11:31:15,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 11:31:15,017 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 204 [2020-10-12 11:31:15,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:31:15,043 INFO L225 Difference]: With dead ends: 11525 [2020-10-12 11:31:15,044 INFO L226 Difference]: Without dead ends: 6024 [2020-10-12 11:31:15,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:31:15,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6024 states. [2020-10-12 11:31:15,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6024 to 6012. [2020-10-12 11:31:15,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6012 states. [2020-10-12 11:31:15,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 9037 transitions. [2020-10-12 11:31:15,225 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 9037 transitions. Word has length 204 [2020-10-12 11:31:15,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:31:15,225 INFO L479 AbstractCegarLoop]: Abstraction has 6012 states and 9037 transitions. [2020-10-12 11:31:15,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:31:15,225 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 9037 transitions. [2020-10-12 11:31:15,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-12 11:31:15,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:31:15,237 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:31:15,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:31:15,237 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:31:15,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:31:15,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1425255050, now seen corresponding path program 1 times [2020-10-12 11:31:15,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:31:15,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052267672] [2020-10-12 11:31:15,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:31:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:15,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:15,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:16,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:17,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:18,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:18,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-12 11:31:18,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:31:18,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3107 [2020-10-12 11:31:18,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:18,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:31:18,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:31:18,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 11:31:18,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:18,564 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:31:18,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:31:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:18,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:18,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:18,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:31:18,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:31:18,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 11:31:18,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:18,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:31:18,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:31:18,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:31:18,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:18,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:31:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:18,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:18,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:18,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:31:18,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:31:18,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 11:31:18,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:18,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:31:18,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:31:18,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:31:18,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:18,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:31:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:18,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:18,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:18,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 11:31:18,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:31:18,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 11:31:18,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:18,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:31:18,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:31:18,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 11:31:18,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:18,809 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 11:31:18,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052267672] [2020-10-12 11:31:18,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:31:18,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:31:18,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677050679] [2020-10-12 11:31:18,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:31:18,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:31:18,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:31:18,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:31:18,811 INFO L87 Difference]: Start difference. First operand 6012 states and 9037 transitions. Second operand 7 states. [2020-10-12 11:31:18,982 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:31:21,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:31:21,549 INFO L93 Difference]: Finished difference Result 16836 states and 26483 transitions. [2020-10-12 11:31:21,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 11:31:21,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-10-12 11:31:21,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:31:21,608 INFO L225 Difference]: With dead ends: 16836 [2020-10-12 11:31:21,608 INFO L226 Difference]: Without dead ends: 11510 [2020-10-12 11:31:21,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:31:21,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11510 states. [2020-10-12 11:31:21,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11510 to 11378. [2020-10-12 11:31:21,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11378 states. [2020-10-12 11:31:21,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11378 states to 11378 states and 17503 transitions. [2020-10-12 11:31:21,991 INFO L78 Accepts]: Start accepts. Automaton has 11378 states and 17503 transitions. Word has length 205 [2020-10-12 11:31:21,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:31:21,991 INFO L479 AbstractCegarLoop]: Abstraction has 11378 states and 17503 transitions. [2020-10-12 11:31:21,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:31:21,992 INFO L276 IsEmpty]: Start isEmpty. Operand 11378 states and 17503 transitions. [2020-10-12 11:31:22,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-12 11:31:22,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:31:22,011 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:31:22,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:31:22,011 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:31:22,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:31:22,011 INFO L82 PathProgramCache]: Analyzing trace with hash -183873958, now seen corresponding path program 1 times [2020-10-12 11:31:22,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:31:22,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119768584] [2020-10-12 11:31:22,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:31:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:22,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:22,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:22,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:23,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:25,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:25,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-12 11:31:25,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:31:25,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3844 [2020-10-12 11:31:25,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:25,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 11:31:25,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:31:25,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 11:31:25,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:26,077 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:31:26,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:31:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:26,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:26,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:26,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:31:26,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:31:26,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:31:26,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:26,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:31:26,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:31:26,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:31:26,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:26,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:31:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:26,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:26,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:26,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:31:26,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:31:26,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 11:31:26,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:26,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:31:26,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:31:26,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:31:26,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:26,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:31:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:26,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:26,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:26,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:31:26,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:31:26,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 11:31:26,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:26,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:31:26,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:31:26,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:31:26,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:26,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 11:31:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:26,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:26,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:26,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 11:31:26,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:31:26,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 11:31:26,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:26,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:31:26,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:31:26,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 11:31:26,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:26,539 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 87 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 11:31:26,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119768584] [2020-10-12 11:31:26,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:31:26,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 11:31:26,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109082973] [2020-10-12 11:31:26,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 11:31:26,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:31:26,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 11:31:26,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:31:26,541 INFO L87 Difference]: Start difference. First operand 11378 states and 17503 transitions. Second operand 10 states. [2020-10-12 11:31:26,682 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:31:27,040 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 131 [2020-10-12 11:31:28,319 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 132 [2020-10-12 11:31:30,942 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 11:31:31,954 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:31:33,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:31:33,283 INFO L93 Difference]: Finished difference Result 26293 states and 43039 transitions. [2020-10-12 11:31:33,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 11:31:33,284 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 233 [2020-10-12 11:31:33,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:31:33,351 INFO L225 Difference]: With dead ends: 26293 [2020-10-12 11:31:33,351 INFO L226 Difference]: Without dead ends: 15036 [2020-10-12 11:31:33,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2020-10-12 11:31:33,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15036 states. [2020-10-12 11:31:33,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15036 to 14634. [2020-10-12 11:31:33,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14634 states. [2020-10-12 11:31:33,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14634 states to 14634 states and 22160 transitions. [2020-10-12 11:31:33,991 INFO L78 Accepts]: Start accepts. Automaton has 14634 states and 22160 transitions. Word has length 233 [2020-10-12 11:31:33,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:31:33,992 INFO L479 AbstractCegarLoop]: Abstraction has 14634 states and 22160 transitions. [2020-10-12 11:31:33,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 11:31:33,992 INFO L276 IsEmpty]: Start isEmpty. Operand 14634 states and 22160 transitions. [2020-10-12 11:31:34,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-12 11:31:34,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:31:34,010 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:31:34,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:31:34,010 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:31:34,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:31:34,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1367861518, now seen corresponding path program 1 times [2020-10-12 11:31:34,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:31:34,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414674277] [2020-10-12 11:31:34,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:31:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:34,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:34,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:35,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:36,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:36,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 11:31:36,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:31:36,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2790 [2020-10-12 11:31:36,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:31:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:31:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 11:31:36,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:37,020 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:31:37,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:31:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:37,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:37,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:37,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:31:37,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:31:37,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:31:37,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:31:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:31:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:31:37,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:37,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:31:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:37,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:37,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:37,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:37,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:31:37,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:31:37,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 11:31:37,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:37,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:31:37,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:31:37,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:31:37,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:37,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:31:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:37,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:37,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:37,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:31:37,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:31:37,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-12 11:31:37,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:37,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:31:37,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:31:37,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 11:31:37,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:37,520 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 61 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:31:37,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414674277] [2020-10-12 11:31:37,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:31:37,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:31:37,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361200140] [2020-10-12 11:31:37,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:31:37,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:31:37,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:31:37,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:31:37,523 INFO L87 Difference]: Start difference. First operand 14634 states and 22160 transitions. Second operand 8 states. [2020-10-12 11:31:37,659 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:31:39,026 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 11:31:40,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:31:40,440 INFO L93 Difference]: Finished difference Result 34115 states and 52790 transitions. [2020-10-12 11:31:40,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:31:40,440 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 232 [2020-10-12 11:31:40,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:31:40,500 INFO L225 Difference]: With dead ends: 34115 [2020-10-12 11:31:40,501 INFO L226 Difference]: Without dead ends: 20167 [2020-10-12 11:31:40,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:31:40,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20167 states. [2020-10-12 11:31:40,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20167 to 20039. [2020-10-12 11:31:40,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20039 states. [2020-10-12 11:31:41,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20039 states to 20039 states and 30960 transitions. [2020-10-12 11:31:41,017 INFO L78 Accepts]: Start accepts. Automaton has 20039 states and 30960 transitions. Word has length 232 [2020-10-12 11:31:41,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:31:41,018 INFO L479 AbstractCegarLoop]: Abstraction has 20039 states and 30960 transitions. [2020-10-12 11:31:41,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:31:41,018 INFO L276 IsEmpty]: Start isEmpty. Operand 20039 states and 30960 transitions. [2020-10-12 11:31:41,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-12 11:31:41,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:31:41,045 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:31:41,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 11:31:41,046 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:31:41,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:31:41,047 INFO L82 PathProgramCache]: Analyzing trace with hash 22790815, now seen corresponding path program 1 times [2020-10-12 11:31:41,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:31:41,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391909022] [2020-10-12 11:31:41,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:31:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:41,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:41,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:42,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:42,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:45,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:45,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-12 11:31:45,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:31:45,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4791 [2020-10-12 11:31:45,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:45,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:31:45,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:31:45,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 11:31:45,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:46,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:31:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:46,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:46,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:46,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:31:46,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:31:46,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:31:46,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:46,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:31:46,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:31:46,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:31:46,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:46,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:31:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:46,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:46,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:46,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:31:46,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:31:46,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 11:31:46,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:46,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:31:46,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:31:46,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:31:46,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:46,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:31:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:46,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:46,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:46,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:46,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:31:46,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:31:46,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 11:31:46,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:46,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:31:46,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:31:46,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:31:46,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:46,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 11:31:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:46,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:46,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:46,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:31:46,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:31:46,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 11:31:46,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:46,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:31:46,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:31:46,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 11:31:46,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:46,499 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 94 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 11:31:46,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391909022] [2020-10-12 11:31:46,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:31:46,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:31:46,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709171463] [2020-10-12 11:31:46,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:31:46,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:31:46,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:31:46,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:31:46,502 INFO L87 Difference]: Start difference. First operand 20039 states and 30960 transitions. Second operand 8 states. [2020-10-12 11:31:46,729 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 11:31:46,959 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:31:50,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:31:50,782 INFO L93 Difference]: Finished difference Result 59422 states and 104757 transitions. [2020-10-12 11:31:50,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:31:50,783 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 243 [2020-10-12 11:31:50,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:31:51,008 INFO L225 Difference]: With dead ends: 59422 [2020-10-12 11:31:51,009 INFO L226 Difference]: Without dead ends: 39504 [2020-10-12 11:31:51,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-12 11:31:51,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39504 states. [2020-10-12 11:31:52,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39504 to 37487. [2020-10-12 11:31:52,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37487 states. [2020-10-12 11:31:52,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37487 states to 37487 states and 55643 transitions. [2020-10-12 11:31:52,278 INFO L78 Accepts]: Start accepts. Automaton has 37487 states and 55643 transitions. Word has length 243 [2020-10-12 11:31:52,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:31:52,279 INFO L479 AbstractCegarLoop]: Abstraction has 37487 states and 55643 transitions. [2020-10-12 11:31:52,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:31:52,279 INFO L276 IsEmpty]: Start isEmpty. Operand 37487 states and 55643 transitions. [2020-10-12 11:31:52,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-12 11:31:52,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:31:52,336 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:31:52,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 11:31:52,337 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:31:52,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:31:52,337 INFO L82 PathProgramCache]: Analyzing trace with hash -2117611587, now seen corresponding path program 1 times [2020-10-12 11:31:52,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:31:52,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503631741] [2020-10-12 11:31:52,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:31:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:52,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:52,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:52,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:52,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:52,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:53,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:54,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:54,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:55,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:57,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:57,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-12 11:31:57,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 11:31:57,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 11:31:57,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:57,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:31:57,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:31:57,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 11:31:57,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:57,555 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:31:57,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:31:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:57,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:57,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:57,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:31:57,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:31:57,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:31:57,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:57,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:31:57,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:31:57,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:31:57,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:31:57,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:31:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:57,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:57,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:57,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:31:57,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:31:57,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 11:31:57,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:57,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:31:57,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:31:57,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:31:57,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:57,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:31:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:57,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:57,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:57,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:57,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:57,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:31:57,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:31:57,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 11:31:57,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:57,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:31:57,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:31:57,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 11:31:57,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:57,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 11:31:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:31:57,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:31:57,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:31:57,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 11:31:57,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:31:57,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-12 11:31:57,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:31:57,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:31:57,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:31:57,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 11:31:57,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:31:57,976 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 105 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 11:31:57,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503631741] [2020-10-12 11:31:57,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:31:57,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:31:57,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723113119] [2020-10-12 11:31:57,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:31:57,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:31:57,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:31:57,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:31:57,978 INFO L87 Difference]: Start difference. First operand 37487 states and 55643 transitions. Second operand 7 states. [2020-10-12 11:31:58,195 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:31:58,404 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:32:02,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:32:02,733 INFO L93 Difference]: Finished difference Result 130652 states and 221113 transitions. [2020-10-12 11:32:02,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:32:02,733 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 259 [2020-10-12 11:32:02,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:32:03,160 INFO L225 Difference]: With dead ends: 130652 [2020-10-12 11:32:03,161 INFO L226 Difference]: Without dead ends: 93640 [2020-10-12 11:32:03,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:32:03,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93640 states. [2020-10-12 11:32:05,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93640 to 91298. [2020-10-12 11:32:05,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91298 states. [2020-10-12 11:32:05,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91298 states to 91298 states and 128855 transitions. [2020-10-12 11:32:05,535 INFO L78 Accepts]: Start accepts. Automaton has 91298 states and 128855 transitions. Word has length 259 [2020-10-12 11:32:05,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:32:05,536 INFO L479 AbstractCegarLoop]: Abstraction has 91298 states and 128855 transitions. [2020-10-12 11:32:05,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:32:05,536 INFO L276 IsEmpty]: Start isEmpty. Operand 91298 states and 128855 transitions. [2020-10-12 11:32:05,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-12 11:32:05,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:32:05,639 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:32:05,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 11:32:05,640 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:32:05,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:32:05,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1141805796, now seen corresponding path program 1 times [2020-10-12 11:32:05,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:32:05,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493059457] [2020-10-12 11:32:05,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:32:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:32:07,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:07,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:08,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:10,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:32:10,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-12 11:32:10,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:32:10,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 11:32:10,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:32:10,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:32:10,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-12 11:32:10,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-12 11:32:10,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:32:10,913 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:32:10,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:32:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:32:10,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:10,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:32:10,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:32:10,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:32:10,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:32:10,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:32:10,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:32:10,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:32:10,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:32:10,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:32:10,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:32:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:32:11,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:11,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:32:11,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:32:11,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:32:11,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 11:32:11,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:32:11,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:32:11,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:32:11,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 11:32:11,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:32:11,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 11:32:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:32:11,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:11,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:11,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:32:11,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 11:32:11,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:32:11,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-12 11:32:11,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:32:11,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:32:11,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:32:11,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 11:32:11,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:32:11,323 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 111 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:32:11,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493059457] [2020-10-12 11:32:11,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:32:11,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:32:11,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228987550] [2020-10-12 11:32:11,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:32:11,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:32:11,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:32:11,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:32:11,324 INFO L87 Difference]: Start difference. First operand 91298 states and 128855 transitions. Second operand 6 states. [2020-10-12 11:32:11,558 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:32:14,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:32:14,232 INFO L93 Difference]: Finished difference Result 210700 states and 301663 transitions. [2020-10-12 11:32:14,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 11:32:14,233 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 260 [2020-10-12 11:32:14,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:32:14,577 INFO L225 Difference]: With dead ends: 210700 [2020-10-12 11:32:14,577 INFO L226 Difference]: Without dead ends: 121151 [2020-10-12 11:32:14,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:32:14,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121151 states. [2020-10-12 11:32:17,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121151 to 121014. [2020-10-12 11:32:17,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121014 states. [2020-10-12 11:32:17,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121014 states to 121014 states and 168488 transitions. [2020-10-12 11:32:17,483 INFO L78 Accepts]: Start accepts. Automaton has 121014 states and 168488 transitions. Word has length 260 [2020-10-12 11:32:17,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:32:17,483 INFO L479 AbstractCegarLoop]: Abstraction has 121014 states and 168488 transitions. [2020-10-12 11:32:17,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:32:17,483 INFO L276 IsEmpty]: Start isEmpty. Operand 121014 states and 168488 transitions. [2020-10-12 11:32:17,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-12 11:32:17,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:32:17,561 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:32:17,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 11:32:17,562 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:32:17,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:32:17,562 INFO L82 PathProgramCache]: Analyzing trace with hash -2020760824, now seen corresponding path program 1 times [2020-10-12 11:32:17,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:32:17,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966922983] [2020-10-12 11:32:17,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:32:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:32:17,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:17,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:18,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:18,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:22,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:22,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:32:22,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-12 11:32:22,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:32:22,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 11:32:22,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:32:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:32:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:32:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 11:32:22,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:32:22,750 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:32:22,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:32:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:32:22,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:22,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:32:22,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:32:22,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:32:22,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:32:22,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:32:22,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:32:22,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:32:22,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:32:22,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:32:22,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:32:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:32:22,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:22,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:32:22,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:32:22,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:32:22,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 11:32:22,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:32:22,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:32:22,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:32:22,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:32:22,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:32:22,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:32:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:32:22,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:22,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:32:22,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 11:32:22,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:32:22,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 11:32:22,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:32:22,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:32:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:32:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 11:32:22,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:32:22,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 11:32:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:32:22,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:22,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:32:22,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 11:32:22,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:32:22,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 11:32:22,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:32:22,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:32:22,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-12 11:32:22,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:32:22,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:32:23,059 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 95 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-12 11:32:23,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966922983] [2020-10-12 11:32:23,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:32:23,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:32:23,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196599206] [2020-10-12 11:32:23,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:32:23,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:32:23,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:32:23,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:32:23,061 INFO L87 Difference]: Start difference. First operand 121014 states and 168488 transitions. Second operand 7 states. [2020-10-12 11:32:23,188 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:32:27,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:32:27,447 INFO L93 Difference]: Finished difference Result 318683 states and 460788 transitions. [2020-10-12 11:32:27,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 11:32:27,447 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2020-10-12 11:32:27,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:32:28,004 INFO L225 Difference]: With dead ends: 318683 [2020-10-12 11:32:28,004 INFO L226 Difference]: Without dead ends: 200739 [2020-10-12 11:32:28,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:32:28,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200739 states. [2020-10-12 11:32:31,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200739 to 199110. [2020-10-12 11:32:31,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199110 states. [2020-10-12 11:32:31,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199110 states to 199110 states and 278263 transitions. [2020-10-12 11:32:31,741 INFO L78 Accepts]: Start accepts. Automaton has 199110 states and 278263 transitions. Word has length 265 [2020-10-12 11:32:31,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:32:31,742 INFO L479 AbstractCegarLoop]: Abstraction has 199110 states and 278263 transitions. [2020-10-12 11:32:31,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:32:31,742 INFO L276 IsEmpty]: Start isEmpty. Operand 199110 states and 278263 transitions. [2020-10-12 11:32:31,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-12 11:32:31,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:32:31,789 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:32:31,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 11:32:31,789 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:32:31,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:32:31,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1391063068, now seen corresponding path program 1 times [2020-10-12 11:32:31,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:32:31,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785490024] [2020-10-12 11:32:31,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:32:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:32:31,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:32,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:32,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:33,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:32:33,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-12 11:32:33,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:32:33,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1739 [2020-10-12 11:32:33,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:32:33,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:32:33,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-12 11:32:33,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-12 11:32:33,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:32:36,980 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:32:36,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:32:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:32:36,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:36,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:32:36,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:32:36,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:32:36,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:32:36,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:32:36,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:32:36,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:32:36,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:32:36,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:32:37,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:32:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:32:37,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:37,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:32:37,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:32:37,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:32:37,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:32:37,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:32:37,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:32:37,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:32:37,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:32:37,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:32:37,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:32:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:32:37,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:37,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:32:37,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 11:32:37,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:32:37,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 11:32:37,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:32:37,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:32:37,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:32:37,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 11:32:37,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:32:37,401 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-12 11:32:37,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785490024] [2020-10-12 11:32:37,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:32:37,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:32:37,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433227046] [2020-10-12 11:32:37,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:32:37,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:32:37,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:32:37,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:32:37,403 INFO L87 Difference]: Start difference. First operand 199110 states and 278263 transitions. Second operand 5 states. [2020-10-12 11:32:38,262 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-12 11:32:41,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:32:41,076 INFO L93 Difference]: Finished difference Result 359938 states and 504661 transitions. [2020-10-12 11:32:41,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:32:41,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 269 [2020-10-12 11:32:41,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:32:41,595 INFO L225 Difference]: With dead ends: 359938 [2020-10-12 11:32:41,595 INFO L226 Difference]: Without dead ends: 200278 [2020-10-12 11:32:42,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:32:42,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200278 states. [2020-10-12 11:32:45,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200278 to 200110. [2020-10-12 11:32:45,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200110 states. [2020-10-12 11:32:45,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200110 states to 200110 states and 279303 transitions. [2020-10-12 11:32:45,867 INFO L78 Accepts]: Start accepts. Automaton has 200110 states and 279303 transitions. Word has length 269 [2020-10-12 11:32:45,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:32:45,867 INFO L479 AbstractCegarLoop]: Abstraction has 200110 states and 279303 transitions. [2020-10-12 11:32:45,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:32:45,867 INFO L276 IsEmpty]: Start isEmpty. Operand 200110 states and 279303 transitions. [2020-10-12 11:32:45,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-12 11:32:45,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:32:45,930 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:32:45,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 11:32:45,931 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:32:45,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:32:45,931 INFO L82 PathProgramCache]: Analyzing trace with hash -884600995, now seen corresponding path program 1 times [2020-10-12 11:32:45,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:32:45,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902835148] [2020-10-12 11:32:45,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:32:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:32:46,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:46,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:46,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:51,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:32:51,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-12 11:32:51,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:32:51,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5990 [2020-10-12 11:32:51,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:32:51,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:32:51,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:32:51,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 11:32:51,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:32:52,127 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:32:52,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:32:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:32:52,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:52,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:32:52,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:32:52,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:32:52,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:32:52,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:32:52,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:32:52,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:32:52,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:32:52,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:32:52,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:32:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:32:52,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:52,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:32:52,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:32:52,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:32:52,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 11:32:52,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:32:52,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:32:52,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:32:52,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:32:52,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:32:52,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:32:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:32:52,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:52,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:32:52,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:32:52,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:32:52,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 11:32:52,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:32:52,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:32:52,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:32:52,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:32:52,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:32:52,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 11:32:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:32:52,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:52,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:32:52,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 11:32:52,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:32:52,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 11:32:52,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:32:52,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:32:52,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 11:32:52,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:32:52,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:32:52,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 11:32:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:32:52,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:32:52,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:32:52,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 11:32:52,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:32:52,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 11:32:52,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:32:52,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:32:52,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-12 11:32:52,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:32:52,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:32:52,525 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 116 proven. 54 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-12 11:32:52,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902835148] [2020-10-12 11:32:52,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:32:52,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:32:52,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340843602] [2020-10-12 11:32:52,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:32:52,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:32:52,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:32:52,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:32:52,527 INFO L87 Difference]: Start difference. First operand 200110 states and 279303 transitions. Second operand 8 states. [2020-10-12 11:32:52,653 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:32:52,938 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 11:32:58,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:32:58,451 INFO L93 Difference]: Finished difference Result 434216 states and 675288 transitions. [2020-10-12 11:32:58,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 11:32:58,452 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 285 [2020-10-12 11:32:58,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:33:00,129 INFO L225 Difference]: With dead ends: 434216 [2020-10-12 11:33:00,129 INFO L226 Difference]: Without dead ends: 234581 [2020-10-12 11:33:00,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-10-12 11:33:00,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234581 states. [2020-10-12 11:33:07,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234581 to 228083. [2020-10-12 11:33:07,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228083 states. [2020-10-12 11:33:08,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228083 states to 228083 states and 310251 transitions. [2020-10-12 11:33:08,895 INFO L78 Accepts]: Start accepts. Automaton has 228083 states and 310251 transitions. Word has length 285 [2020-10-12 11:33:08,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:33:08,895 INFO L479 AbstractCegarLoop]: Abstraction has 228083 states and 310251 transitions. [2020-10-12 11:33:08,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:33:08,895 INFO L276 IsEmpty]: Start isEmpty. Operand 228083 states and 310251 transitions. [2020-10-12 11:33:08,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-12 11:33:08,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:33:08,945 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:33:08,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 11:33:08,945 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:33:08,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:33:08,945 INFO L82 PathProgramCache]: Analyzing trace with hash 244263788, now seen corresponding path program 1 times [2020-10-12 11:33:08,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:33:08,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879075414] [2020-10-12 11:33:08,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:33:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:33:09,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:33:09,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:33:09,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:33:10,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:33:14,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:33:14,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-12 11:33:14,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:33:14,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5623 [2020-10-12 11:33:14,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:33:14,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:33:14,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:33:14,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 11:33:14,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:33:14,753 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:33:14,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:33:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:33:14,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:33:14,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:33:14,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:33:14,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:33:14,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:33:14,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:33:14,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:33:14,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:33:14,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:33:14,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:33:14,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:33:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:33:14,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:33:14,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:33:14,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:33:14,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:33:14,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 11:33:14,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:33:14,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:33:14,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:33:14,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:33:14,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:33:14,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:33:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:33:14,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:33:14,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:33:14,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:33:14,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:33:14,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:33:14,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 11:33:14,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:33:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:33:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:33:14,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 11:33:14,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:33:14,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 11:33:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:33:14,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:33:14,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:33:14,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 11:33:14,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:33:14,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 11:33:14,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:33:14,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:33:14,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:33:14,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 11:33:14,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:33:15,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 11:33:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:33:15,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:33:15,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:33:15,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 11:33:15,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:33:15,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 11:33:15,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:33:15,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:33:15,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-12 11:33:15,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:33:15,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:33:15,209 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 148 proven. 45 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-12 11:33:15,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879075414] [2020-10-12 11:33:15,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:33:15,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 11:33:15,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28521503] [2020-10-12 11:33:15,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:33:15,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:33:15,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:33:15,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:33:15,211 INFO L87 Difference]: Start difference. First operand 228083 states and 310251 transitions. Second operand 9 states. [2020-10-12 11:33:15,527 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:33:15,781 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:33:23,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:33:23,229 INFO L93 Difference]: Finished difference Result 567797 states and 870122 transitions. [2020-10-12 11:33:23,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 11:33:23,230 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 297 [2020-10-12 11:33:23,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:33:24,412 INFO L225 Difference]: With dead ends: 567797 [2020-10-12 11:33:24,413 INFO L226 Difference]: Without dead ends: 341887 [2020-10-12 11:33:24,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2020-10-12 11:33:24,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341887 states.