/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=NARROWEST --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/Problem15_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:58:50,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:58:50,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:58:50,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:58:50,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:58:50,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:58:50,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:58:50,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:58:50,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:58:50,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:58:50,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:58:50,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:58:50,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:58:50,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:58:50,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:58:50,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:58:50,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:58:50,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:58:50,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:58:50,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:58:50,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:58:50,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:58:50,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:58:50,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:58:50,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:58:50,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:58:50,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:58:50,426 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:58:50,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:58:50,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:58:50,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:58:50,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:58:50,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:58:50,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:58:50,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:58:50,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:58:50,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:58:50,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:58:50,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:58:50,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:58:50,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:58:50,434 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 [2020-10-13 08:58:50,455 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:58:50,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:58:50,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:58:50,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:58:50,457 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:58:50,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:58:50,458 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:58:50,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:58:50,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:58:50,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:58:50,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:58:50,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:58:50,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:58:50,459 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:58:50,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:58:50,459 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:58:50,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:58:50,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:58:50,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:58:50,460 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:58:50,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:58:50,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:58:50,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:58:50,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:58:50,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:58:50,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:58:50,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:58:50,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:58:50,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:58:50,462 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:58:50,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:58:50,770 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:58:50,774 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:58:50,776 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:58:50,776 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:58:50,777 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label10.c [2020-10-13 08:58:50,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f9be4403/f437ebb839d044018b86235a64d7f4a4/FLAG44f580e62 [2020-10-13 08:58:51,554 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:58:51,555 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label10.c [2020-10-13 08:58:51,583 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f9be4403/f437ebb839d044018b86235a64d7f4a4/FLAG44f580e62 [2020-10-13 08:58:51,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f9be4403/f437ebb839d044018b86235a64d7f4a4 [2020-10-13 08:58:51,697 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:58:51,699 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:58:51,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:58:51,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:58:51,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:58:51,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:58:51" (1/1) ... [2020-10-13 08:58:51,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29eb21d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:58:51, skipping insertion in model container [2020-10-13 08:58:51,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:58:51" (1/1) ... [2020-10-13 08:58:51,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:58:51,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:58:52,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:58:52,848 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:58:53,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:58:53,211 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:58:53,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:58:53 WrapperNode [2020-10-13 08:58:53,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:58:53,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:58:53,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:58:53,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:58:53,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:58:53" (1/1) ... [2020-10-13 08:58:53,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:58:53" (1/1) ... [2020-10-13 08:58:53,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:58:53" (1/1) ... [2020-10-13 08:58:53,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:58:53" (1/1) ... [2020-10-13 08:58:53,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:58:53" (1/1) ... [2020-10-13 08:58:53,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:58:53" (1/1) ... [2020-10-13 08:58:53,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:58:53" (1/1) ... [2020-10-13 08:58:53,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:58:53,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:58:53,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:58:53,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:58:53,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:58:53" (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 [2020-10-13 08:58:53,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:58:53,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:58:53,520 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:58:53,520 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:58:53,521 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:58:53,521 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:58:53,521 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:58:53,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:58:53,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:58:53,522 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:58:53,522 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:58:53,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:58:53,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:58:59,561 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:58:59,561 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:58:59,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:58:59 BoogieIcfgContainer [2020-10-13 08:58:59,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:58:59,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:58:59,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:58:59,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:58:59,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:58:51" (1/3) ... [2020-10-13 08:58:59,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a20f2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:58:59, skipping insertion in model container [2020-10-13 08:58:59,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:58:53" (2/3) ... [2020-10-13 08:58:59,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a20f2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:58:59, skipping insertion in model container [2020-10-13 08:58:59,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:58:59" (3/3) ... [2020-10-13 08:58:59,587 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label10.c [2020-10-13 08:58:59,600 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:58:59,609 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:58:59,627 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:58:59,662 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:58:59,662 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:58:59,662 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:58:59,663 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:58:59,663 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:58:59,663 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:58:59,663 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:58:59,663 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:58:59,693 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-13 08:58:59,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 08:58:59,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:59,703 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] [2020-10-13 08:58:59,704 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:59,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:59,711 INFO L82 PathProgramCache]: Analyzing trace with hash 92280264, now seen corresponding path program 1 times [2020-10-13 08:58:59,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:59,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409204419] [2020-10-13 08:58:59,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:59,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:00,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:00,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 08:59:00,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:00,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-13 08:59:00,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:00,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:59:00,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:59:00,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 08:59:00,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 08:59:00,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:00,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:00,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:00,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:00,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:00,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 08:59:00,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:00,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:59:00,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:00,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:59:00,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409204419] [2020-10-13 08:59:00,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:59:00,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:59:00,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314046568] [2020-10-13 08:59:00,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:59:00,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:00,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:59:00,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:59:00,452 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-13 08:59:09,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:09,105 INFO L93 Difference]: Finished difference Result 1240 states and 2220 transitions. [2020-10-13 08:59:09,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:59:09,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-13 08:59:09,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:09,132 INFO L225 Difference]: With dead ends: 1240 [2020-10-13 08:59:09,132 INFO L226 Difference]: Without dead ends: 724 [2020-10-13 08:59:09,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:59:09,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-10-13 08:59:09,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 712. [2020-10-13 08:59:09,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2020-10-13 08:59:09,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1129 transitions. [2020-10-13 08:59:09,265 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1129 transitions. Word has length 40 [2020-10-13 08:59:09,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:09,266 INFO L479 AbstractCegarLoop]: Abstraction has 712 states and 1129 transitions. [2020-10-13 08:59:09,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:59:09,266 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1129 transitions. [2020-10-13 08:59:09,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 08:59:09,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:09,277 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:59:09,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:59:09,277 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:09,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:09,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1848881283, now seen corresponding path program 1 times [2020-10-13 08:59:09,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:09,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624435384] [2020-10-13 08:59:09,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:09,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:09,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:10,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:10,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:11,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:11,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 08:59:11,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:59:11,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2018 [2020-10-13 08:59:11,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:11,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:11,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 08:59:11,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 08:59:11,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:59:11,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:11,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:11,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:11,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:11,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:11,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:59:11,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:11,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:11,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:11,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:11,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:11,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:59:11,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:11,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-13 08:59:11,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:11,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:11,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:11,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:59:11,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-13 08:59:11,873 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:59:11,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624435384] [2020-10-13 08:59:11,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:59:11,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:59:11,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14259628] [2020-10-13 08:59:11,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:59:11,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:11,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:59:11,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:59:11,880 INFO L87 Difference]: Start difference. First operand 712 states and 1129 transitions. Second operand 5 states. [2020-10-13 08:59:17,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:17,267 INFO L93 Difference]: Finished difference Result 1442 states and 2284 transitions. [2020-10-13 08:59:17,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:59:17,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 08:59:17,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:17,282 INFO L225 Difference]: With dead ends: 1442 [2020-10-13 08:59:17,283 INFO L226 Difference]: Without dead ends: 716 [2020-10-13 08:59:17,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:59:17,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-10-13 08:59:17,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 712. [2020-10-13 08:59:17,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2020-10-13 08:59:17,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1127 transitions. [2020-10-13 08:59:17,348 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1127 transitions. Word has length 112 [2020-10-13 08:59:17,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:17,349 INFO L479 AbstractCegarLoop]: Abstraction has 712 states and 1127 transitions. [2020-10-13 08:59:17,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:59:17,350 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1127 transitions. [2020-10-13 08:59:17,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 08:59:17,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:17,353 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:59:17,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:59:17,354 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:17,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:17,354 INFO L82 PathProgramCache]: Analyzing trace with hash 754248996, now seen corresponding path program 1 times [2020-10-13 08:59:17,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:17,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461054488] [2020-10-13 08:59:17,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:17,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:17,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:17,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:18,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:18,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:18,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 08:59:18,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:59:18,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1210 [2020-10-13 08:59:18,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:18,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:18,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 08:59:18,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:59:18,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:59:18,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:18,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:18,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:18,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:18,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:18,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:59:18,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:18,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:18,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:18,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:18,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:18,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:18,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:18,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:18,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:59:18,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:18,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 08:59:18,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:18,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:18,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-13 08:59:18,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:59:18,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:18,865 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:59:18,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461054488] [2020-10-13 08:59:18,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:59:18,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 08:59:18,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199612735] [2020-10-13 08:59:18,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:59:18,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:18,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:59:18,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:59:18,871 INFO L87 Difference]: Start difference. First operand 712 states and 1127 transitions. Second operand 5 states. [2020-10-13 08:59:28,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:28,028 INFO L93 Difference]: Finished difference Result 2049 states and 3300 transitions. [2020-10-13 08:59:28,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:59:28,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 08:59:28,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:28,045 INFO L225 Difference]: With dead ends: 2049 [2020-10-13 08:59:28,045 INFO L226 Difference]: Without dead ends: 1343 [2020-10-13 08:59:28,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:59:28,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2020-10-13 08:59:28,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1338. [2020-10-13 08:59:28,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1338 states. [2020-10-13 08:59:28,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1962 transitions. [2020-10-13 08:59:28,117 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1962 transitions. Word has length 113 [2020-10-13 08:59:28,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:28,121 INFO L479 AbstractCegarLoop]: Abstraction has 1338 states and 1962 transitions. [2020-10-13 08:59:28,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:59:28,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1962 transitions. [2020-10-13 08:59:28,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 08:59:28,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:28,137 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:59:28,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:59:28,138 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:28,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:28,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1574643571, now seen corresponding path program 1 times [2020-10-13 08:59:28,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:28,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920492926] [2020-10-13 08:59:28,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:28,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:28,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:29,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:29,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 08:59:29,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:59:29,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1491 [2020-10-13 08:59:29,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:29,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:29,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 08:59:29,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 08:59:29,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:59:29,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:29,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:29,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:29,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:29,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:29,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:59:29,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:29,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:29,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:29,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:29,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:59:29,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:29,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:30,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:30,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 08:59:30,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:30,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 08:59:30,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:30,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:30,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:30,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 08:59:30,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:59:30,181 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:59:30,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920492926] [2020-10-13 08:59:30,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:59:30,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:59:30,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395050228] [2020-10-13 08:59:30,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:59:30,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:30,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:59:30,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:59:30,187 INFO L87 Difference]: Start difference. First operand 1338 states and 1962 transitions. Second operand 5 states. [2020-10-13 08:59:42,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:42,388 INFO L93 Difference]: Finished difference Result 3979 states and 5903 transitions. [2020-10-13 08:59:42,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:59:42,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-13 08:59:42,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:42,413 INFO L225 Difference]: With dead ends: 3979 [2020-10-13 08:59:42,414 INFO L226 Difference]: Without dead ends: 2647 [2020-10-13 08:59:42,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:59:42,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2020-10-13 08:59:42,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2638. [2020-10-13 08:59:42,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2638 states. [2020-10-13 08:59:42,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 3724 transitions. [2020-10-13 08:59:42,537 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 3724 transitions. Word has length 120 [2020-10-13 08:59:42,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:42,538 INFO L479 AbstractCegarLoop]: Abstraction has 2638 states and 3724 transitions. [2020-10-13 08:59:42,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:59:42,539 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 3724 transitions. [2020-10-13 08:59:42,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 08:59:42,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:42,541 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:59:42,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:59:42,541 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:42,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:42,542 INFO L82 PathProgramCache]: Analyzing trace with hash -17730551, now seen corresponding path program 1 times [2020-10-13 08:59:42,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:42,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561332483] [2020-10-13 08:59:42,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:42,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:42,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:43,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:43,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 08:59:43,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:59:43,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 712 [2020-10-13 08:59:43,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:43,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:43,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 08:59:43,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 08:59:43,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:43,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:43,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:43,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:43,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:43,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:43,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:59:43,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:43,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:43,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:43,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:43,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:43,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:43,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:43,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:43,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 08:59:43,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:43,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-13 08:59:43,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:43,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:43,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:43,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 08:59:43,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:59:43,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561332483] [2020-10-13 08:59:43,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:59:43,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:59:43,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030798338] [2020-10-13 08:59:43,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:59:43,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:43,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:59:43,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:59:43,586 INFO L87 Difference]: Start difference. First operand 2638 states and 3724 transitions. Second operand 5 states. [2020-10-13 08:59:55,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:55,312 INFO L93 Difference]: Finished difference Result 7141 states and 10349 transitions. [2020-10-13 08:59:55,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:59:55,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 08:59:55,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:55,347 INFO L225 Difference]: With dead ends: 7141 [2020-10-13 08:59:55,350 INFO L226 Difference]: Without dead ends: 4509 [2020-10-13 08:59:55,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:59:55,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4509 states. [2020-10-13 08:59:55,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4509 to 4504. [2020-10-13 08:59:55,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4504 states. [2020-10-13 08:59:55,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4504 states to 4504 states and 5879 transitions. [2020-10-13 08:59:55,526 INFO L78 Accepts]: Start accepts. Automaton has 4504 states and 5879 transitions. Word has length 123 [2020-10-13 08:59:55,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:55,527 INFO L479 AbstractCegarLoop]: Abstraction has 4504 states and 5879 transitions. [2020-10-13 08:59:55,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:59:55,527 INFO L276 IsEmpty]: Start isEmpty. Operand 4504 states and 5879 transitions. [2020-10-13 08:59:55,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-13 08:59:55,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:55,531 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:59:55,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:59:55,532 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:55,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:55,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1771067611, now seen corresponding path program 1 times [2020-10-13 08:59:55,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:55,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094315802] [2020-10-13 08:59:55,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:55,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:55,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:56,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:56,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 08:59:56,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:59:56,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-10-13 08:59:56,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:56,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:56,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-13 08:59:56,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 08:59:56,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:56,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:56,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:56,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:56,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:56,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:56,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:59:56,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:56,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:56,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:56,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:56,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:56,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:56,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:56,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:56,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 08:59:56,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:56,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-13 08:59:56,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:56,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:56,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:56,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 08:59:56,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:59:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:59:57,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094315802] [2020-10-13 08:59:57,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:59:57,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:59:57,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212801848] [2020-10-13 08:59:57,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:59:57,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:57,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:59:57,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:59:57,094 INFO L87 Difference]: Start difference. First operand 4504 states and 5879 transitions. Second operand 6 states. [2020-10-13 09:00:08,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:00:08,369 INFO L93 Difference]: Finished difference Result 13345 states and 18604 transitions. [2020-10-13 09:00:08,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:00:08,372 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-10-13 09:00:08,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:00:08,430 INFO L225 Difference]: With dead ends: 13345 [2020-10-13 09:00:08,431 INFO L226 Difference]: Without dead ends: 8847 [2020-10-13 09:00:08,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:00:08,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8847 states. [2020-10-13 09:00:08,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8847 to 8839. [2020-10-13 09:00:08,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8839 states. [2020-10-13 09:00:08,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8839 states to 8839 states and 11841 transitions. [2020-10-13 09:00:08,731 INFO L78 Accepts]: Start accepts. Automaton has 8839 states and 11841 transitions. Word has length 139 [2020-10-13 09:00:08,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:00:08,732 INFO L479 AbstractCegarLoop]: Abstraction has 8839 states and 11841 transitions. [2020-10-13 09:00:08,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:00:08,732 INFO L276 IsEmpty]: Start isEmpty. Operand 8839 states and 11841 transitions. [2020-10-13 09:00:08,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-13 09:00:08,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:00:08,736 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:00:08,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:00:08,736 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:00:08,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:00:08,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1818557921, now seen corresponding path program 1 times [2020-10-13 09:00:08,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:00:08,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978496373] [2020-10-13 09:00:08,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:00:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:08,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:09,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:09,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:09,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:00:09,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:00:09,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-10-13 09:00:09,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:09,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:00:09,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-13 09:00:09,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 09:00:09,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:09,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:00:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:09,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:09,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:09,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:00:09,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:09,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:00:09,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:09,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:09,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:09,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:09,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:09,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:00:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:09,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:10,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:10,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 09:00:10,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:10,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 09:00:10,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:10,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:00:10,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:10,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 09:00:10,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:10,137 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:00:10,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978496373] [2020-10-13 09:00:10,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:00:10,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:00:10,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376381416] [2020-10-13 09:00:10,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:00:10,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:00:10,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:00:10,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:00:10,140 INFO L87 Difference]: Start difference. First operand 8839 states and 11841 transitions. Second operand 5 states. [2020-10-13 09:00:24,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:00:24,318 INFO L93 Difference]: Finished difference Result 21704 states and 29628 transitions. [2020-10-13 09:00:24,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:00:24,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-13 09:00:24,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:00:24,410 INFO L225 Difference]: With dead ends: 21704 [2020-10-13 09:00:24,410 INFO L226 Difference]: Without dead ends: 12871 [2020-10-13 09:00:24,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:00:24,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12871 states. [2020-10-13 09:00:24,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12871 to 12865. [2020-10-13 09:00:24,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12865 states. [2020-10-13 09:00:24,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12865 states to 12865 states and 17241 transitions. [2020-10-13 09:00:24,953 INFO L78 Accepts]: Start accepts. Automaton has 12865 states and 17241 transitions. Word has length 153 [2020-10-13 09:00:24,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:00:24,954 INFO L479 AbstractCegarLoop]: Abstraction has 12865 states and 17241 transitions. [2020-10-13 09:00:24,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:00:24,954 INFO L276 IsEmpty]: Start isEmpty. Operand 12865 states and 17241 transitions. [2020-10-13 09:00:24,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-13 09:00:24,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:00:24,966 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:00:24,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:00:24,967 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:00:24,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:00:24,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1887808461, now seen corresponding path program 1 times [2020-10-13 09:00:24,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:00:24,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709449358] [2020-10-13 09:00:24,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:00:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:25,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:25,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:26,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:27,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:27,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-13 09:00:27,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:00:27,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2897 [2020-10-13 09:00:27,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:27,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:00:27,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-10-13 09:00:27,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 09:00:27,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:00:28,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:00:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:28,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:28,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:28,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:00:28,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:28,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:00:28,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:28,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:28,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:28,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:28,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:28,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:00:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:28,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:28,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:28,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 09:00:28,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:28,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-13 09:00:28,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:00:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 09:00:28,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:28,599 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:00:28,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709449358] [2020-10-13 09:00:28,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:00:28,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:00:28,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44183832] [2020-10-13 09:00:28,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:00:28,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:00:28,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:00:28,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:00:28,604 INFO L87 Difference]: Start difference. First operand 12865 states and 17241 transitions. Second operand 5 states. [2020-10-13 09:00:36,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:00:36,808 INFO L93 Difference]: Finished difference Result 25737 states and 34570 transitions. [2020-10-13 09:00:36,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:00:36,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-10-13 09:00:36,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:00:36,899 INFO L225 Difference]: With dead ends: 25737 [2020-10-13 09:00:36,900 INFO L226 Difference]: Without dead ends: 12869 [2020-10-13 09:00:36,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:00:36,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12869 states. [2020-10-13 09:00:37,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12869 to 12865. [2020-10-13 09:00:37,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12865 states. [2020-10-13 09:00:37,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12865 states to 12865 states and 17202 transitions. [2020-10-13 09:00:37,363 INFO L78 Accepts]: Start accepts. Automaton has 12865 states and 17202 transitions. Word has length 225 [2020-10-13 09:00:37,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:00:37,364 INFO L479 AbstractCegarLoop]: Abstraction has 12865 states and 17202 transitions. [2020-10-13 09:00:37,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:00:37,365 INFO L276 IsEmpty]: Start isEmpty. Operand 12865 states and 17202 transitions. [2020-10-13 09:00:37,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-13 09:00:37,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:00:37,378 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:00:37,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:00:37,379 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:00:37,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:00:37,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1761285174, now seen corresponding path program 1 times [2020-10-13 09:00:37,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:00:37,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578217278] [2020-10-13 09:00:37,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:00:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:37,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:37,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:39,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:40,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:41,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:41,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-13 09:00:41,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:00:41,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4189 [2020-10-13 09:00:41,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:41,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:00:41,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 199 [2020-10-13 09:00:41,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:00:41,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:00:41,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:00:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:41,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:41,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:41,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:00:41,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:41,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:00:41,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:41,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:41,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:41,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:41,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:00:41,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:00:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:41,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:41,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:41,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:00:41,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:41,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 09:00:41,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:41,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:41,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:41,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:41,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:42,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 09:00:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:42,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:42,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:42,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:00:42,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:42,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 09:00:42,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:42,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:00:42,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:42,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:00:42,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:00:42,294 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 09:00:42,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578217278] [2020-10-13 09:00:42,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:00:42,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:00:42,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216943069] [2020-10-13 09:00:42,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:00:42,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:00:42,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:00:42,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:00:42,305 INFO L87 Difference]: Start difference. First operand 12865 states and 17202 transitions. Second operand 5 states. [2020-10-13 09:00:48,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:00:48,433 INFO L93 Difference]: Finished difference Result 25744 states and 34485 transitions. [2020-10-13 09:00:48,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:00:48,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2020-10-13 09:00:48,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:00:48,492 INFO L225 Difference]: With dead ends: 25744 [2020-10-13 09:00:48,492 INFO L226 Difference]: Without dead ends: 12869 [2020-10-13 09:00:48,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:00:48,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12869 states. [2020-10-13 09:00:48,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12869 to 12865. [2020-10-13 09:00:48,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12865 states. [2020-10-13 09:00:48,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12865 states to 12865 states and 17190 transitions. [2020-10-13 09:00:48,908 INFO L78 Accepts]: Start accepts. Automaton has 12865 states and 17190 transitions. Word has length 227 [2020-10-13 09:00:48,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:00:48,909 INFO L479 AbstractCegarLoop]: Abstraction has 12865 states and 17190 transitions. [2020-10-13 09:00:48,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:00:48,909 INFO L276 IsEmpty]: Start isEmpty. Operand 12865 states and 17190 transitions. [2020-10-13 09:00:48,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-13 09:00:48,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:00:48,927 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:00:48,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:00:48,928 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:00:48,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:00:48,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1255616593, now seen corresponding path program 1 times [2020-10-13 09:00:48,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:00:48,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28599863] [2020-10-13 09:00:48,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:00:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:49,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:49,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:49,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:49,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:53,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:54,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:54,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-13 09:00:54,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:00:54,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-13 09:00:54,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:54,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:00:54,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-13 09:00:54,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 09:00:54,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:54,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:00:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:54,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:54,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:54,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:00:54,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:54,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:00:54,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:54,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:54,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:54,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:54,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:54,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:00:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:54,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:54,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:54,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:00:54,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:54,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:00:54,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:54,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:54,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:54,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:54,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:54,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:00:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:54,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:54,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:54,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 09:00:54,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:54,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-13 09:00:54,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:54,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:00:54,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:54,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 09:00:54,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:54,679 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 09:00:54,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28599863] [2020-10-13 09:00:54,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:00:54,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:00:54,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797384562] [2020-10-13 09:00:54,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:00:54,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:00:54,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:00:54,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:00:54,684 INFO L87 Difference]: Start difference. First operand 12865 states and 17190 transitions. Second operand 5 states. [2020-10-13 09:01:05,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:05,929 INFO L93 Difference]: Finished difference Result 30070 states and 40758 transitions. [2020-10-13 09:01:05,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:01:05,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 252 [2020-10-13 09:01:05,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:06,016 INFO L225 Difference]: With dead ends: 30070 [2020-10-13 09:01:06,016 INFO L226 Difference]: Without dead ends: 17211 [2020-10-13 09:01:06,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:01:06,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17211 states. [2020-10-13 09:01:06,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17211 to 17201. [2020-10-13 09:01:06,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17201 states. [2020-10-13 09:01:06,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17201 states to 17201 states and 23029 transitions. [2020-10-13 09:01:06,499 INFO L78 Accepts]: Start accepts. Automaton has 17201 states and 23029 transitions. Word has length 252 [2020-10-13 09:01:06,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:06,500 INFO L479 AbstractCegarLoop]: Abstraction has 17201 states and 23029 transitions. [2020-10-13 09:01:06,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:01:06,501 INFO L276 IsEmpty]: Start isEmpty. Operand 17201 states and 23029 transitions. [2020-10-13 09:01:06,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-13 09:01:06,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:06,527 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:01:06,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:01:06,528 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:06,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:06,529 INFO L82 PathProgramCache]: Analyzing trace with hash 218773322, now seen corresponding path program 1 times [2020-10-13 09:01:06,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:06,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35572202] [2020-10-13 09:01:06,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:06,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:06,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:08,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:11,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:11,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-13 09:01:11,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:01:11,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 09:01:11,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:11,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:01:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-13 09:01:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 09:01:11,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:11,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:11,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:11,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:11,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:11,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:11,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:01:11,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:11,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:11,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:11,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:11,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:11,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:01:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:11,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:11,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:11,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:01:11,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:11,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:01:11,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:11,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:11,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:11,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:11,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:11,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 09:01:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:11,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:12,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:12,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 09:01:12,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:12,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-13 09:01:12,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:12,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 09:01:12,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:12,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-13 09:01:12,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:01:12,322 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-13 09:01:12,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35572202] [2020-10-13 09:01:12,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:01:12,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:01:12,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114743625] [2020-10-13 09:01:12,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:01:12,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:12,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:01:12,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:01:12,327 INFO L87 Difference]: Start difference. First operand 17201 states and 23029 transitions. Second operand 6 states. [2020-10-13 09:01:25,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:25,671 INFO L93 Difference]: Finished difference Result 42151 states and 57247 transitions. [2020-10-13 09:01:25,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:01:25,674 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 293 [2020-10-13 09:01:25,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:25,803 INFO L225 Difference]: With dead ends: 42151 [2020-10-13 09:01:25,803 INFO L226 Difference]: Without dead ends: 24956 [2020-10-13 09:01:25,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:01:25,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24956 states. [2020-10-13 09:01:26,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24956 to 24946. [2020-10-13 09:01:26,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24946 states. [2020-10-13 09:01:26,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24946 states to 24946 states and 33556 transitions. [2020-10-13 09:01:26,371 INFO L78 Accepts]: Start accepts. Automaton has 24946 states and 33556 transitions. Word has length 293 [2020-10-13 09:01:26,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:26,372 INFO L479 AbstractCegarLoop]: Abstraction has 24946 states and 33556 transitions. [2020-10-13 09:01:26,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:01:26,372 INFO L276 IsEmpty]: Start isEmpty. Operand 24946 states and 33556 transitions. [2020-10-13 09:01:26,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-13 09:01:26,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:26,406 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:01:26,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:01:26,406 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:26,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:26,407 INFO L82 PathProgramCache]: Analyzing trace with hash 346736464, now seen corresponding path program 1 times [2020-10-13 09:01:26,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:26,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50625891] [2020-10-13 09:01:26,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:26,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:26,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:28,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:28,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:31,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:31,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-10-13 09:01:31,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:01:31,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4626 [2020-10-13 09:01:31,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:31,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:01:31,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 312 [2020-10-13 09:01:31,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 09:01:31,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:31,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:31,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:31,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:31,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:31,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:31,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:01:31,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:31,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:31,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:31,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:31,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:01:31,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:01:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:31,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:31,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:31,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:01:31,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:31,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:01:31,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:31,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:31,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:31,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:31,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:01:31,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 09:01:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:31,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:31,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:31,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-13 09:01:31,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:31,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-13 09:01:31,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:31,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:31,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:31,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-13 09:01:31,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:31,813 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-13 09:01:31,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50625891] [2020-10-13 09:01:31,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:01:31,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:01:31,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595564157] [2020-10-13 09:01:31,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:01:31,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:31,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:01:31,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:01:31,818 INFO L87 Difference]: Start difference. First operand 24946 states and 33556 transitions. Second operand 5 states. [2020-10-13 09:01:39,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:39,004 INFO L93 Difference]: Finished difference Result 49899 states and 67199 transitions. [2020-10-13 09:01:39,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:01:39,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 340 [2020-10-13 09:01:39,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:39,072 INFO L225 Difference]: With dead ends: 49899 [2020-10-13 09:01:39,072 INFO L226 Difference]: Without dead ends: 24950 [2020-10-13 09:01:39,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:01:39,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24950 states. [2020-10-13 09:01:39,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24950 to 24946. [2020-10-13 09:01:39,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24946 states. [2020-10-13 09:01:39,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24946 states to 24946 states and 33547 transitions. [2020-10-13 09:01:39,551 INFO L78 Accepts]: Start accepts. Automaton has 24946 states and 33547 transitions. Word has length 340 [2020-10-13 09:01:39,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:39,552 INFO L479 AbstractCegarLoop]: Abstraction has 24946 states and 33547 transitions. [2020-10-13 09:01:39,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:01:39,552 INFO L276 IsEmpty]: Start isEmpty. Operand 24946 states and 33547 transitions. [2020-10-13 09:01:39,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2020-10-13 09:01:39,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:39,593 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:01:39,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:01:39,594 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:39,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:39,594 INFO L82 PathProgramCache]: Analyzing trace with hash -314517526, now seen corresponding path program 1 times [2020-10-13 09:01:39,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:39,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633299933] [2020-10-13 09:01:39,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:39,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:39,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:41,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:42,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:43,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:43,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 396 [2020-10-13 09:01:43,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:01:43,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4304 [2020-10-13 09:01:43,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:43,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:01:43,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 356 [2020-10-13 09:01:43,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 09:01:43,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:44,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:44,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:44,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:44,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:44,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:44,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:01:44,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:44,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:44,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:01:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:44,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:44,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:44,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:01:44,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:44,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:01:44,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:44,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:44,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 09:01:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:44,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:44,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:44,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-13 09:01:44,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:44,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-13 09:01:44,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:44,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:44,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:44,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 228 [2020-10-13 09:01:44,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:44,565 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-13 09:01:44,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633299933] [2020-10-13 09:01:44,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:01:44,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:01:44,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344834170] [2020-10-13 09:01:44,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:01:44,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:44,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:01:44,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:01:44,567 INFO L87 Difference]: Start difference. First operand 24946 states and 33547 transitions. Second operand 5 states. [2020-10-13 09:01:52,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:52,572 INFO L93 Difference]: Finished difference Result 49899 states and 67200 transitions. [2020-10-13 09:01:52,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:01:52,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 384 [2020-10-13 09:01:52,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:52,651 INFO L225 Difference]: With dead ends: 49899 [2020-10-13 09:01:52,651 INFO L226 Difference]: Without dead ends: 24950 [2020-10-13 09:01:52,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:01:52,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24950 states. [2020-10-13 09:01:53,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24950 to 24946. [2020-10-13 09:01:53,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24946 states. [2020-10-13 09:01:53,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24946 states to 24946 states and 33519 transitions. [2020-10-13 09:01:53,150 INFO L78 Accepts]: Start accepts. Automaton has 24946 states and 33519 transitions. Word has length 384 [2020-10-13 09:01:53,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:53,151 INFO L479 AbstractCegarLoop]: Abstraction has 24946 states and 33519 transitions. [2020-10-13 09:01:53,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:01:53,151 INFO L276 IsEmpty]: Start isEmpty. Operand 24946 states and 33519 transitions. [2020-10-13 09:01:53,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-13 09:01:53,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:53,191 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:01:53,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:01:53,192 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:53,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:53,192 INFO L82 PathProgramCache]: Analyzing trace with hash 233765015, now seen corresponding path program 1 times [2020-10-13 09:01:53,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:53,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189788046] [2020-10-13 09:01:53,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:53,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:53,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:53,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:54,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:56,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:56,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:58,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:58,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 399 [2020-10-13 09:01:58,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:01:58,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 09:01:58,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:58,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:01:58,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-13 09:01:58,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 09:01:58,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:58,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:58,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:58,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:58,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:58,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:58,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:58,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:01:58,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:58,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:58,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:58,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:58,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:58,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:01:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:58,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:58,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:58,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:01:58,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:58,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:01:58,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:58,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:58,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:58,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:58,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:58,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:01:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:58,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:58,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:58,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-13 09:01:58,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:58,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-13 09:01:58,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:58,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:58,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:58,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 273 [2020-10-13 09:01:58,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:58,768 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 09:01:58,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189788046] [2020-10-13 09:01:58,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:01:58,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:01:58,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959444575] [2020-10-13 09:01:58,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:01:58,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:58,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:01:58,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:01:58,770 INFO L87 Difference]: Start difference. First operand 24946 states and 33519 transitions. Second operand 5 states. [2020-10-13 09:02:07,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:02:07,356 INFO L93 Difference]: Finished difference Result 49899 states and 67148 transitions. [2020-10-13 09:02:07,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:02:07,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 387 [2020-10-13 09:02:07,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:02:07,435 INFO L225 Difference]: With dead ends: 49899 [2020-10-13 09:02:07,436 INFO L226 Difference]: Without dead ends: 24950 [2020-10-13 09:02:07,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:02:07,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24950 states. [2020-10-13 09:02:07,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24950 to 24946. [2020-10-13 09:02:07,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24946 states. [2020-10-13 09:02:07,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24946 states to 24946 states and 33459 transitions. [2020-10-13 09:02:07,953 INFO L78 Accepts]: Start accepts. Automaton has 24946 states and 33459 transitions. Word has length 387 [2020-10-13 09:02:07,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:02:07,954 INFO L479 AbstractCegarLoop]: Abstraction has 24946 states and 33459 transitions. [2020-10-13 09:02:07,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:02:07,954 INFO L276 IsEmpty]: Start isEmpty. Operand 24946 states and 33459 transitions. [2020-10-13 09:02:07,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-10-13 09:02:07,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:02:07,994 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:02:07,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:02:07,994 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:02:07,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:02:07,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1775571111, now seen corresponding path program 1 times [2020-10-13 09:02:07,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:02:07,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279651656] [2020-10-13 09:02:07,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:02:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:08,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:08,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:08,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:13,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:13,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 441 [2020-10-13 09:02:13,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:02:13,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 09:02:13,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:13,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:02:13,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 09:02:13,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 09:02:13,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:13,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:02:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:13,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:13,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:13,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:02:13,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:13,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:02:13,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:13,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:13,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:13,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:13,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:13,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:02:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:13,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:13,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:13,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:02:13,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:13,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:02:13,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:13,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:13,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:13,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 09:02:13,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:13,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 09:02:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:13,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:13,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:15,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:15,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:15,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-13 09:02:15,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:02:15,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2553 [2020-10-13 09:02:15,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:15,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 09:02:15,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:02:15,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 307 [2020-10-13 09:02:15,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:16,423 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-10-13 09:02:16,686 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2020-10-13 09:02:16,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:02:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:16,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:16,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:16,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 09:02:16,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:16,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 09:02:16,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:16,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:02:16,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:02:16,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:02:16,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:19,223 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:02:19,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279651656] [2020-10-13 09:02:19,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:02:19,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 09:02:19,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592206562] [2020-10-13 09:02:19,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 09:02:19,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:02:19,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 09:02:19,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:02:19,225 INFO L87 Difference]: Start difference. First operand 24946 states and 33459 transitions. Second operand 12 states. [2020-10-13 09:02:19,523 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-10-13 09:02:19,819 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-10-13 09:02:20,448 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-10-13 09:02:20,793 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2020-10-13 09:02:21,018 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-10-13 09:02:21,759 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2020-10-13 09:02:22,290 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-10-13 09:02:22,815 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-10-13 09:02:23,325 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-10-13 09:02:23,607 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 42 [2020-10-13 09:02:24,030 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2020-10-13 09:02:24,954 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-10-13 09:02:25,548 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2020-10-13 09:02:25,967 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-10-13 09:02:27,877 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 50