/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:54:56,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:54:56,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:54:56,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:54:56,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:54:56,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:54:56,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:54:56,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:54:56,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:54:56,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:54:56,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:54:56,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:54:56,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:54:56,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:54:56,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:54:56,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:54:56,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:54:56,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:54:56,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:54:56,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:54:56,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:54:56,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:54:56,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:54:56,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:54:56,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:54:56,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:54:56,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:54:56,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:54:56,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:54:56,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:54:56,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:54:56,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:54:56,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:54:56,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:54:56,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:54:56,672 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:54:56,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:54:56,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:54:56,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:54:56,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:54:56,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:54:56,676 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 00:54:56,720 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:54:56,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:54:56,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:54:56,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:54:56,722 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:54:56,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:54:56,723 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:54:56,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:54:56,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:54:56,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:54:56,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:54:56,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:54:56,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:54:56,725 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:54:56,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:54:56,726 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:54:56,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:54:56,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:54:56,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:54:56,727 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:54:56,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:54:56,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:54:56,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:54:56,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:54:56,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:54:56,728 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:54:56,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:54:56,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:54:56,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:54:56,728 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 00:54:57,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:54:57,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:54:57,084 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:54:57,086 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:54:57,086 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:54:57,087 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label50.c [2020-10-14 00:54:57,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc3bbc370/868a94956a474fb19d727549c55642a5/FLAGe385fde1e [2020-10-14 00:54:57,830 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:54:57,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label50.c [2020-10-14 00:54:57,847 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc3bbc370/868a94956a474fb19d727549c55642a5/FLAGe385fde1e [2020-10-14 00:54:58,004 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc3bbc370/868a94956a474fb19d727549c55642a5 [2020-10-14 00:54:58,012 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:54:58,014 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:54:58,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:54:58,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:54:58,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:54:58,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:54:58" (1/1) ... [2020-10-14 00:54:58,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b2fc715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:58, skipping insertion in model container [2020-10-14 00:54:58,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:54:58" (1/1) ... [2020-10-14 00:54:58,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:54:58,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:54:58,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:54:58,997 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:54:59,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:54:59,331 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:54:59,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:59 WrapperNode [2020-10-14 00:54:59,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:54:59,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:54:59,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:54:59,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:54:59,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:59" (1/1) ... [2020-10-14 00:54:59,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:59" (1/1) ... [2020-10-14 00:54:59,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:59" (1/1) ... [2020-10-14 00:54:59,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:59" (1/1) ... [2020-10-14 00:54:59,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:59" (1/1) ... [2020-10-14 00:54:59,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:59" (1/1) ... [2020-10-14 00:54:59,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:59" (1/1) ... [2020-10-14 00:54:59,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:54:59,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:54:59,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:54:59,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:54:59,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:54:59,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:54:59,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:54:59,586 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 00:54:59,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:54:59,586 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 00:54:59,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:54:59,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:54:59,587 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 00:54:59,587 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:54:59,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:54:59,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:55:01,563 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:55:01,564 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 00:55:01,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:55:01 BoogieIcfgContainer [2020-10-14 00:55:01,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:55:01,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:55:01,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:55:01,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:55:01,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:54:58" (1/3) ... [2020-10-14 00:55:01,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18289fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:55:01, skipping insertion in model container [2020-10-14 00:55:01,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:59" (2/3) ... [2020-10-14 00:55:01,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18289fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:55:01, skipping insertion in model container [2020-10-14 00:55:01,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:55:01" (3/3) ... [2020-10-14 00:55:01,579 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label50.c [2020-10-14 00:55:01,590 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:55:01,598 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:55:01,612 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:55:01,638 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:55:01,639 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:55:01,639 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:55:01,639 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:55:01,639 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:55:01,639 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:55:01,639 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:55:01,640 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:55:01,665 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 00:55:01,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-14 00:55:01,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:01,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:55:01,682 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:01,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:01,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1738397325, now seen corresponding path program 1 times [2020-10-14 00:55:01,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:01,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712295073] [2020-10-14 00:55:01,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:02,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:02,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:05,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:05,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-14 00:55:05,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:55:05,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3742 [2020-10-14 00:55:05,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:05,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:05,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:55:05,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:55:05,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 00:55:05,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 00:55:06,278 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:06,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:06,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:06,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:06,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:06,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:06,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 00:55:06,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:06,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:06,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:06,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:06,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:55:06,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:06,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:55:06,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712295073] [2020-10-14 00:55:06,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:55:06,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:55:06,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131879699] [2020-10-14 00:55:06,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:55:06,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:06,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:55:06,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:55:06,406 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2020-10-14 00:55:06,580 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:55:09,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:09,428 INFO L93 Difference]: Finished difference Result 889 states and 1547 transitions. [2020-10-14 00:55:09,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:55:09,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-14 00:55:09,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:09,457 INFO L225 Difference]: With dead ends: 889 [2020-10-14 00:55:09,457 INFO L226 Difference]: Without dead ends: 485 [2020-10-14 00:55:09,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:55:09,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-10-14 00:55:09,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 475. [2020-10-14 00:55:09,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-14 00:55:09,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 731 transitions. [2020-10-14 00:55:09,580 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 731 transitions. Word has length 160 [2020-10-14 00:55:09,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:09,581 INFO L479 AbstractCegarLoop]: Abstraction has 475 states and 731 transitions. [2020-10-14 00:55:09,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:55:09,581 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 731 transitions. [2020-10-14 00:55:09,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 00:55:09,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:09,588 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 00:55:09,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:55:09,588 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:09,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:09,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1415514105, now seen corresponding path program 1 times [2020-10-14 00:55:09,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:09,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111372554] [2020-10-14 00:55:09,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:09,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:09,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:12,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:12,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 00:55:12,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:55:12,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3124 [2020-10-14 00:55:12,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:12,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:12,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:12,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:55:12,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-14 00:55:12,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:13,154 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:13,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:13,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:13,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:13,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:13,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:13,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:55:13,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:13,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:13,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:13,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:13,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:13,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:55:13,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:13,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:13,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:13,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:55:13,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:13,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 00:55:13,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:13,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:13,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:13,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:13,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:55:13,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:13,413 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:55:13,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111372554] [2020-10-14 00:55:13,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:13,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:55:13,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738353046] [2020-10-14 00:55:13,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:55:13,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:13,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:55:13,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:55:13,418 INFO L87 Difference]: Start difference. First operand 475 states and 731 transitions. Second operand 5 states. [2020-10-14 00:55:13,710 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:55:16,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:16,373 INFO L93 Difference]: Finished difference Result 1372 states and 2138 transitions. [2020-10-14 00:55:16,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:55:16,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-14 00:55:16,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:16,382 INFO L225 Difference]: With dead ends: 1372 [2020-10-14 00:55:16,383 INFO L226 Difference]: Without dead ends: 903 [2020-10-14 00:55:16,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:55:16,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2020-10-14 00:55:16,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 897. [2020-10-14 00:55:16,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2020-10-14 00:55:16,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1233 transitions. [2020-10-14 00:55:16,445 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1233 transitions. Word has length 172 [2020-10-14 00:55:16,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:16,447 INFO L479 AbstractCegarLoop]: Abstraction has 897 states and 1233 transitions. [2020-10-14 00:55:16,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:55:16,448 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1233 transitions. [2020-10-14 00:55:16,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-14 00:55:16,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:16,460 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 00:55:16,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:55:16,460 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:16,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:16,460 INFO L82 PathProgramCache]: Analyzing trace with hash 490272561, now seen corresponding path program 1 times [2020-10-14 00:55:16,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:16,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656863032] [2020-10-14 00:55:16,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:16,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:17,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:18,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:18,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 00:55:18,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:55:18,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1661 [2020-10-14 00:55:18,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:18,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:18,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:18,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 00:55:18,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-14 00:55:18,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:18,395 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:18,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:18,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:18,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:18,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:18,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:18,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:55:18,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:18,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:18,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:18,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:18,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:18,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:18,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:18,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:18,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:18,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 00:55:18,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:18,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 00:55:18,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:18,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:18,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:18,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:18,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 00:55:18,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:55:18,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656863032] [2020-10-14 00:55:18,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:18,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:55:18,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042335600] [2020-10-14 00:55:18,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:55:18,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:18,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:55:18,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:55:18,590 INFO L87 Difference]: Start difference. First operand 897 states and 1233 transitions. Second operand 5 states. [2020-10-14 00:55:18,754 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:55:21,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:21,270 INFO L93 Difference]: Finished difference Result 2648 states and 3704 transitions. [2020-10-14 00:55:21,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:55:21,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-10-14 00:55:21,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:21,283 INFO L225 Difference]: With dead ends: 2648 [2020-10-14 00:55:21,283 INFO L226 Difference]: Without dead ends: 1757 [2020-10-14 00:55:21,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:55:21,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2020-10-14 00:55:21,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1751. [2020-10-14 00:55:21,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1751 states. [2020-10-14 00:55:21,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 2335 transitions. [2020-10-14 00:55:21,340 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 2335 transitions. Word has length 176 [2020-10-14 00:55:21,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:21,340 INFO L479 AbstractCegarLoop]: Abstraction has 1751 states and 2335 transitions. [2020-10-14 00:55:21,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:55:21,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 2335 transitions. [2020-10-14 00:55:21,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-14 00:55:21,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:21,348 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:55:21,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:55:21,348 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:21,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:21,349 INFO L82 PathProgramCache]: Analyzing trace with hash -2139581957, now seen corresponding path program 1 times [2020-10-14 00:55:21,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:21,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226473857] [2020-10-14 00:55:21,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:21,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:21,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:24,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:24,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-14 00:55:24,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:55:24,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2905 [2020-10-14 00:55:24,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:24,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:24,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:24,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 00:55:24,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-14 00:55:24,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:24,584 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:24,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:24,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:24,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:24,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:24,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:24,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:55:24,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:24,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:24,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:24,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:24,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:24,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:24,726 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 00:55:24,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:24,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:24,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:24,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 00:55:24,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:24,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 00:55:24,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:24,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 00:55:24,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:55:24,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226473857] [2020-10-14 00:55:24,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:24,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:55:24,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633284357] [2020-10-14 00:55:25,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:55:25,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:25,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:55:25,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:55:25,002 INFO L87 Difference]: Start difference. First operand 1751 states and 2335 transitions. Second operand 5 states. [2020-10-14 00:55:25,378 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:55:28,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:28,118 INFO L93 Difference]: Finished difference Result 5180 states and 7050 transitions. [2020-10-14 00:55:28,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:55:28,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-14 00:55:28,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:28,146 INFO L225 Difference]: With dead ends: 5180 [2020-10-14 00:55:28,146 INFO L226 Difference]: Without dead ends: 3435 [2020-10-14 00:55:28,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:55:28,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2020-10-14 00:55:28,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 3430. [2020-10-14 00:55:28,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3430 states. [2020-10-14 00:55:28,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3430 states to 3430 states and 4468 transitions. [2020-10-14 00:55:28,273 INFO L78 Accepts]: Start accepts. Automaton has 3430 states and 4468 transitions. Word has length 205 [2020-10-14 00:55:28,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:28,274 INFO L479 AbstractCegarLoop]: Abstraction has 3430 states and 4468 transitions. [2020-10-14 00:55:28,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:55:28,274 INFO L276 IsEmpty]: Start isEmpty. Operand 3430 states and 4468 transitions. [2020-10-14 00:55:28,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-14 00:55:28,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:28,286 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:55:28,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:55:28,287 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:28,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:28,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1539679586, now seen corresponding path program 1 times [2020-10-14 00:55:28,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:28,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075591164] [2020-10-14 00:55:28,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:28,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:28,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:28,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:31,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:33,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:33,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 00:55:33,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:55:33,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-14 00:55:33,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:33,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:33,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:33,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 00:55:33,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-14 00:55:33,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:33,649 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:33,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:33,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:33,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:33,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:33,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:33,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:55:33,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:33,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:33,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:33,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:33,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:33,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:33,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:33,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:33,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:33,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:55:33,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:33,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 00:55:33,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:33,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:33,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:33,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:33,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:33,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 00:55:33,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 00:55:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:33,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:33,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:33,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 00:55:33,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:33,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 00:55:33,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:33,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:33,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:33,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:33,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:55:33,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 00:55:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-14 00:55:33,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075591164] [2020-10-14 00:55:33,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:33,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:55:33,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633745006] [2020-10-14 00:55:33,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:55:33,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:33,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:55:33,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:55:33,967 INFO L87 Difference]: Start difference. First operand 3430 states and 4468 transitions. Second operand 6 states. [2020-10-14 00:55:34,268 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:55:34,558 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:55:38,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:38,363 INFO L93 Difference]: Finished difference Result 8533 states and 11485 transitions. [2020-10-14 00:55:38,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:55:38,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 214 [2020-10-14 00:55:38,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:38,392 INFO L225 Difference]: With dead ends: 8533 [2020-10-14 00:55:38,392 INFO L226 Difference]: Without dead ends: 5109 [2020-10-14 00:55:38,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:55:38,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5109 states. [2020-10-14 00:55:38,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5109 to 5102. [2020-10-14 00:55:38,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5102 states. [2020-10-14 00:55:38,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5102 states to 5102 states and 6802 transitions. [2020-10-14 00:55:38,545 INFO L78 Accepts]: Start accepts. Automaton has 5102 states and 6802 transitions. Word has length 214 [2020-10-14 00:55:38,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:38,545 INFO L479 AbstractCegarLoop]: Abstraction has 5102 states and 6802 transitions. [2020-10-14 00:55:38,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:55:38,546 INFO L276 IsEmpty]: Start isEmpty. Operand 5102 states and 6802 transitions. [2020-10-14 00:55:38,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-14 00:55:38,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:38,563 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:55:38,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:55:38,563 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:38,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:38,564 INFO L82 PathProgramCache]: Analyzing trace with hash 2001731336, now seen corresponding path program 1 times [2020-10-14 00:55:38,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:38,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861309320] [2020-10-14 00:55:38,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:38,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:39,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:40,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:40,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-14 00:55:40,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:55:40,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2285 [2020-10-14 00:55:40,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:40,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-14 00:55:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-14 00:55:40,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:41,167 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:41,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:41,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:41,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:41,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:41,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:41,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:55:41,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:41,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:41,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:41,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:41,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:41,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:41,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:41,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:41,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:41,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 00:55:41,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:41,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 00:55:41,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:41,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:41,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:41,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:41,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 00:55:41,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:41,460 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:55:41,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861309320] [2020-10-14 00:55:41,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:41,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:55:41,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789410257] [2020-10-14 00:55:41,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:55:41,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:41,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:55:41,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:55:41,462 INFO L87 Difference]: Start difference. First operand 5102 states and 6802 transitions. Second operand 5 states. [2020-10-14 00:55:41,643 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 00:55:44,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:44,337 INFO L93 Difference]: Finished difference Result 15239 states and 20867 transitions. [2020-10-14 00:55:44,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:55:44,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2020-10-14 00:55:44,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:44,386 INFO L225 Difference]: With dead ends: 15239 [2020-10-14 00:55:44,386 INFO L226 Difference]: Without dead ends: 10143 [2020-10-14 00:55:44,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:55:44,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10143 states. [2020-10-14 00:55:44,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10143 to 10120. [2020-10-14 00:55:44,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10120 states. [2020-10-14 00:55:44,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10120 states to 10120 states and 13575 transitions. [2020-10-14 00:55:44,679 INFO L78 Accepts]: Start accepts. Automaton has 10120 states and 13575 transitions. Word has length 227 [2020-10-14 00:55:44,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:44,680 INFO L479 AbstractCegarLoop]: Abstraction has 10120 states and 13575 transitions. [2020-10-14 00:55:44,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:55:44,680 INFO L276 IsEmpty]: Start isEmpty. Operand 10120 states and 13575 transitions. [2020-10-14 00:55:44,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-14 00:55:44,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:44,714 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 00:55:44,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:55:44,714 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:44,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:44,715 INFO L82 PathProgramCache]: Analyzing trace with hash -413306694, now seen corresponding path program 1 times [2020-10-14 00:55:44,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:44,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356621397] [2020-10-14 00:55:44,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:44,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:44,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:45,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:45,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:49,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:49,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:49,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 00:55:49,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:55:49,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 00:55:49,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:49,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:49,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:55:49,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-14 00:55:49,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 00:55:49,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:50,057 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:50,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:50,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:50,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:50,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:50,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:50,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:55:50,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:50,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:50,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:50,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:50,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:50,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:50,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:50,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:50,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:50,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:55:50,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:50,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:55:50,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:50,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:50,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:50,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 00:55:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:50,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:50,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:50,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:55:50,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:50,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 00:55:50,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:50,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:50,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:50,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:50,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:55:50,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:50,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 00:55:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:50,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:50,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:50,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:55:50,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:50,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 00:55:50,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:50,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:50,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:55:50,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:55:50,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 00:55:50,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:50,596 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 78 proven. 36 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 00:55:50,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356621397] [2020-10-14 00:55:50,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:50,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:55:50,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799915939] [2020-10-14 00:55:50,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:55:50,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:50,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:55:50,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:55:50,598 INFO L87 Difference]: Start difference. First operand 10120 states and 13575 transitions. Second operand 8 states. [2020-10-14 00:55:51,000 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 130 [2020-10-14 00:55:51,604 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 133 [2020-10-14 00:55:51,791 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 00:55:58,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:58,845 INFO L93 Difference]: Finished difference Result 31338 states and 44902 transitions. [2020-10-14 00:55:58,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 00:55:58,846 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 238 [2020-10-14 00:55:58,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:58,964 INFO L225 Difference]: With dead ends: 31338 [2020-10-14 00:55:58,964 INFO L226 Difference]: Without dead ends: 21224 [2020-10-14 00:55:58,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:55:59,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21224 states. [2020-10-14 00:55:59,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21224 to 20924. [2020-10-14 00:55:59,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20924 states. [2020-10-14 00:55:59,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20924 states to 20924 states and 28908 transitions. [2020-10-14 00:55:59,680 INFO L78 Accepts]: Start accepts. Automaton has 20924 states and 28908 transitions. Word has length 238 [2020-10-14 00:55:59,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:59,681 INFO L479 AbstractCegarLoop]: Abstraction has 20924 states and 28908 transitions. [2020-10-14 00:55:59,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:55:59,681 INFO L276 IsEmpty]: Start isEmpty. Operand 20924 states and 28908 transitions. [2020-10-14 00:55:59,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-14 00:55:59,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:59,735 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:55:59,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:55:59,736 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:59,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:59,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1612551317, now seen corresponding path program 1 times [2020-10-14 00:55:59,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:59,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040832312] [2020-10-14 00:55:59,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:59,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:59,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:02,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:03,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:04,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:04,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 00:56:04,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:56:04,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 00:56:04,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:04,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:04,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:04,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 00:56:04,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-14 00:56:04,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:05,041 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:05,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:05,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:05,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:05,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:05,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:05,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:56:05,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:05,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:05,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:05,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:05,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:05,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:05,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:05,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:05,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:05,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 00:56:05,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:05,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 00:56:05,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:05,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:05,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:05,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:05,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:05,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:05,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 00:56:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:05,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:05,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:05,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:56:05,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:05,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:56:05,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:05,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:05,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:05,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:05,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:56:05,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:05,276 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 00:56:05,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040832312] [2020-10-14 00:56:05,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:05,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:56:05,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989382088] [2020-10-14 00:56:05,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:56:05,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:05,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:56:05,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:56:05,279 INFO L87 Difference]: Start difference. First operand 20924 states and 28908 transitions. Second operand 6 states. [2020-10-14 00:56:05,431 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:56:05,785 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 00:56:09,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:09,446 INFO L93 Difference]: Finished difference Result 55896 states and 79651 transitions. [2020-10-14 00:56:09,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:56:09,446 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 238 [2020-10-14 00:56:09,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:09,566 INFO L225 Difference]: With dead ends: 55896 [2020-10-14 00:56:09,567 INFO L226 Difference]: Without dead ends: 34978 [2020-10-14 00:56:09,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:56:09,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34978 states. [2020-10-14 00:56:10,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34978 to 33911. [2020-10-14 00:56:10,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33911 states. [2020-10-14 00:56:10,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33911 states to 33911 states and 47090 transitions. [2020-10-14 00:56:10,407 INFO L78 Accepts]: Start accepts. Automaton has 33911 states and 47090 transitions. Word has length 238 [2020-10-14 00:56:10,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:10,407 INFO L479 AbstractCegarLoop]: Abstraction has 33911 states and 47090 transitions. [2020-10-14 00:56:10,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:56:10,408 INFO L276 IsEmpty]: Start isEmpty. Operand 33911 states and 47090 transitions. [2020-10-14 00:56:10,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-14 00:56:10,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:10,474 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:56:10,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:56:10,474 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:10,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:10,475 INFO L82 PathProgramCache]: Analyzing trace with hash 413905986, now seen corresponding path program 1 times [2020-10-14 00:56:10,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:10,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697890344] [2020-10-14 00:56:10,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:10,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:10,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:10,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:10,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:14,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:15,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:15,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-14 00:56:15,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:56:15,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-14 00:56:15,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:15,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:15,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:15,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-14 00:56:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 00:56:15,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:15,745 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:15,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:15,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:15,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:15,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:15,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:15,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:56:15,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:15,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:15,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:15,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:15,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:15,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:15,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:15,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:15,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:15,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:56:15,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:15,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:56:15,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:15,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:15,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:15,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:15,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:15,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:15,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 00:56:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:15,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:15,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:15,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 00:56:15,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:15,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:56:15,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:15,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:15,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:15,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:15,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:15,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:15,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 00:56:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:15,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:15,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:15,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:56:15,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:15,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 00:56:15,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:15,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:15,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:15,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:15,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:56:15,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:15,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:56:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:15,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:15,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:15,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:56:15,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:15,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 00:56:15,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:15,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:15,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:15,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:15,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 00:56:15,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:16,054 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-14 00:56:16,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697890344] [2020-10-14 00:56:16,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:16,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:56:16,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093407237] [2020-10-14 00:56:16,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:56:16,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:16,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:56:16,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:56:16,056 INFO L87 Difference]: Start difference. First operand 33911 states and 47090 transitions. Second operand 7 states. [2020-10-14 00:56:16,199 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:56:16,653 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:56:19,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:19,142 INFO L93 Difference]: Finished difference Result 68295 states and 98748 transitions. [2020-10-14 00:56:19,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:56:19,142 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-14 00:56:19,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:19,278 INFO L225 Difference]: With dead ends: 68295 [2020-10-14 00:56:19,278 INFO L226 Difference]: Without dead ends: 34390 [2020-10-14 00:56:19,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:56:19,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34390 states. [2020-10-14 00:56:20,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34390 to 34029. [2020-10-14 00:56:20,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34029 states. [2020-10-14 00:56:20,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34029 states to 34029 states and 44708 transitions. [2020-10-14 00:56:20,123 INFO L78 Accepts]: Start accepts. Automaton has 34029 states and 44708 transitions. Word has length 248 [2020-10-14 00:56:20,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:20,123 INFO L479 AbstractCegarLoop]: Abstraction has 34029 states and 44708 transitions. [2020-10-14 00:56:20,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:56:20,124 INFO L276 IsEmpty]: Start isEmpty. Operand 34029 states and 44708 transitions. [2020-10-14 00:56:20,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-14 00:56:20,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:20,161 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:56:20,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:56:20,162 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:20,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:20,162 INFO L82 PathProgramCache]: Analyzing trace with hash -795766388, now seen corresponding path program 1 times [2020-10-14 00:56:20,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:20,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125937030] [2020-10-14 00:56:20,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:20,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:20,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:20,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:21,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:23,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:25,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:25,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-14 00:56:25,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:56:25,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-14 00:56:25,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:25,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:25,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:25,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:56:25,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 00:56:25,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:25,464 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:25,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:25,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:25,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:25,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:25,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:25,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:56:25,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:25,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:25,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:25,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:25,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:25,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:25,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:25,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:25,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:25,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:56:25,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:25,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 00:56:25,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:25,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:25,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:25,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:25,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:56:25,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:25,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:56:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:25,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:25,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:25,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 00:56:25,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:25,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 00:56:25,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:25,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:25,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:25,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:25,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 00:56:25,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:25,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 00:56:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:25,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:25,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:25,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:56:25,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:25,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 00:56:25,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:25,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 00:56:25,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:25,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:25,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 00:56:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:25,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:25,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:25,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:56:25,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:25,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 00:56:25,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:25,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:25,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:25,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 00:56:25,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:25,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:25,978 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 132 proven. 68 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-14 00:56:25,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125937030] [2020-10-14 00:56:25,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:25,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:56:25,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357112863] [2020-10-14 00:56:25,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:56:25,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:25,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:56:25,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:56:25,980 INFO L87 Difference]: Start difference. First operand 34029 states and 44708 transitions. Second operand 8 states. [2020-10-14 00:56:26,201 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 00:56:27,110 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-14 00:56:28,168 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 00:56:31,591 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-10-14 00:56:31,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:31,856 INFO L93 Difference]: Finished difference Result 94451 states and 134473 transitions. [2020-10-14 00:56:31,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 00:56:31,856 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 288 [2020-10-14 00:56:31,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:32,111 INFO L225 Difference]: With dead ends: 94451 [2020-10-14 00:56:32,111 INFO L226 Difference]: Without dead ends: 60428 [2020-10-14 00:56:32,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:56:32,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60428 states. [2020-10-14 00:56:33,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60428 to 58662. [2020-10-14 00:56:33,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58662 states. [2020-10-14 00:56:33,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58662 states to 58662 states and 74694 transitions. [2020-10-14 00:56:33,874 INFO L78 Accepts]: Start accepts. Automaton has 58662 states and 74694 transitions. Word has length 288 [2020-10-14 00:56:33,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:33,875 INFO L479 AbstractCegarLoop]: Abstraction has 58662 states and 74694 transitions. [2020-10-14 00:56:33,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:56:33,875 INFO L276 IsEmpty]: Start isEmpty. Operand 58662 states and 74694 transitions. [2020-10-14 00:56:33,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-14 00:56:33,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:33,965 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 00:56:33,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:56:33,966 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:33,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:33,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1503903479, now seen corresponding path program 1 times [2020-10-14 00:56:33,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:33,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285560228] [2020-10-14 00:56:33,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:34,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:34,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:34,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:35,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:39,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:39,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-14 00:56:39,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:56:39,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 00:56:39,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:39,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:39,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:39,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-14 00:56:39,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 00:56:39,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:39,242 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:39,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:39,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:39,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:39,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:39,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:39,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:56:39,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:39,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:39,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:39,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:39,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:39,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:39,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:39,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:39,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:56:39,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:39,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:56:39,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:39,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:39,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:39,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:39,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:39,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:39,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:56:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:39,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:39,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:39,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:56:39,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:39,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 00:56:39,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:39,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:39,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:39,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:39,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:56:39,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:39,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:56:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:39,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:39,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:39,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:56:39,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:39,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 00:56:39,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:39,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:39,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:39,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:39,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 00:56:39,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:39,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 00:56:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:39,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:39,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:39,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:56:39,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:39,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 00:56:39,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:39,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:39,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:39,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 00:56:39,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:39,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:39,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 00:56:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:39,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:39,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:39,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:56:39,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:39,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 00:56:39,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:39,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:39,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 00:56:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:39,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:39,704 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 185 proven. 50 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-14 00:56:39,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285560228] [2020-10-14 00:56:39,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:39,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:56:39,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112699589] [2020-10-14 00:56:39,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:56:39,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:39,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:56:39,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:56:39,706 INFO L87 Difference]: Start difference. First operand 58662 states and 74694 transitions. Second operand 7 states. [2020-10-14 00:56:40,043 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:56:41,253 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:56:43,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:43,523 INFO L93 Difference]: Finished difference Result 108240 states and 145811 transitions. [2020-10-14 00:56:43,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:56:43,523 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 304 [2020-10-14 00:56:43,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:43,668 INFO L225 Difference]: With dead ends: 108240 [2020-10-14 00:56:43,669 INFO L226 Difference]: Without dead ends: 49584 [2020-10-14 00:56:43,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:56:43,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49584 states. [2020-10-14 00:56:44,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49584 to 48331. [2020-10-14 00:56:44,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48331 states. [2020-10-14 00:56:44,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48331 states to 48331 states and 59836 transitions. [2020-10-14 00:56:44,936 INFO L78 Accepts]: Start accepts. Automaton has 48331 states and 59836 transitions. Word has length 304 [2020-10-14 00:56:44,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:44,937 INFO L479 AbstractCegarLoop]: Abstraction has 48331 states and 59836 transitions. [2020-10-14 00:56:44,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:56:44,937 INFO L276 IsEmpty]: Start isEmpty. Operand 48331 states and 59836 transitions. [2020-10-14 00:56:44,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-14 00:56:44,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:44,992 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 00:56:44,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:56:44,992 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:44,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:44,992 INFO L82 PathProgramCache]: Analyzing trace with hash -656564070, now seen corresponding path program 1 times [2020-10-14 00:56:44,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:44,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209108970] [2020-10-14 00:56:44,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:45,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:45,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:46,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:48,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:48,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-14 00:56:48,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:56:48,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3433 [2020-10-14 00:56:48,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:48,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:48,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:48,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-14 00:56:48,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 00:56:48,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:48,679 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:48,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:48,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:48,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:48,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:48,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:48,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:56:48,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:48,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:48,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:48,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:48,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:48,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:48,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:48,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:48,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:48,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 00:56:48,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:48,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 00:56:48,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:48,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:48,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:48,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:48,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 00:56:48,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:48,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 00:56:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:48,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:49,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:49,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 00:56:49,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:49,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-14 00:56:49,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:49,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:49,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:49,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:49,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 00:56:49,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:49,715 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 239 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:56:49,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209108970] [2020-10-14 00:56:49,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:49,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:56:49,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510602068] [2020-10-14 00:56:49,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:56:49,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:49,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:56:49,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:56:49,717 INFO L87 Difference]: Start difference. First operand 48331 states and 59836 transitions. Second operand 7 states. [2020-10-14 00:56:50,065 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:56:51,575 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:56:53,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:53,789 INFO L93 Difference]: Finished difference Result 109988 states and 144465 transitions. [2020-10-14 00:56:53,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:56:53,789 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 341 [2020-10-14 00:56:53,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:53,974 INFO L225 Difference]: With dead ends: 109988 [2020-10-14 00:56:53,975 INFO L226 Difference]: Without dead ends: 61663 [2020-10-14 00:56:54,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:56:54,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61663 states. [2020-10-14 00:56:55,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61663 to 58763. [2020-10-14 00:56:55,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58763 states. [2020-10-14 00:56:55,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58763 states to 58763 states and 71734 transitions. [2020-10-14 00:56:55,563 INFO L78 Accepts]: Start accepts. Automaton has 58763 states and 71734 transitions. Word has length 341 [2020-10-14 00:56:55,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:55,563 INFO L479 AbstractCegarLoop]: Abstraction has 58763 states and 71734 transitions. [2020-10-14 00:56:55,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:56:55,564 INFO L276 IsEmpty]: Start isEmpty. Operand 58763 states and 71734 transitions. [2020-10-14 00:56:55,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-14 00:56:55,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:55,621 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:56:55,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:56:55,621 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:55,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:55,622 INFO L82 PathProgramCache]: Analyzing trace with hash 485028458, now seen corresponding path program 1 times [2020-10-14 00:56:55,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:55,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311180896] [2020-10-14 00:56:55,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:55,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:55,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:55,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:55,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:57,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:58,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:00,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:00,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-14 00:57:00,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:57:00,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 00:57:00,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:00,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:00,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:00,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 00:57:00,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 00:57:00,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:00,853 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:57:00,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:57:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:00,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:00,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:00,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:57:00,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:00,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:57:00,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:00,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:00,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:00,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:00,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:00,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:00,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:57:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:00,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:00,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:00,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:57:00,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:00,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 00:57:00,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:00,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:00,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:57:00,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:00,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:57:00,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:00,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:57:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:00,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:01,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:01,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:57:01,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:01,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 00:57:01,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:01,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:01,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:01,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:57:01,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:57:01,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:01,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:57:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:01,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:01,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:01,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:57:01,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:01,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:57:01,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:01,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:01,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:01,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 00:57:01,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:01,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:01,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:57:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:01,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:01,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:01,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:57:01,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:01,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 00:57:01,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:01,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:01,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:01,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 00:57:01,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:01,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:01,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-14 00:57:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:01,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:01,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:01,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 00:57:01,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:01,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 00:57:01,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:01,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 00:57:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:01,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:01,322 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 223 proven. 54 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-14 00:57:01,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311180896] [2020-10-14 00:57:01,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:57:01,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:57:01,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193719458] [2020-10-14 00:57:01,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:57:01,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:57:01,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:57:01,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:57:01,324 INFO L87 Difference]: Start difference. First operand 58763 states and 71734 transitions. Second operand 7 states. [2020-10-14 00:57:01,494 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:57:05,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:57:05,624 INFO L93 Difference]: Finished difference Result 160714 states and 202158 transitions. [2020-10-14 00:57:05,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 00:57:05,625 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 370 [2020-10-14 00:57:05,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:57:05,913 INFO L225 Difference]: With dead ends: 160714 [2020-10-14 00:57:05,914 INFO L226 Difference]: Without dead ends: 102164 [2020-10-14 00:57:05,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:57:06,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102164 states. [2020-10-14 00:57:07,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102164 to 100505. [2020-10-14 00:57:07,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100505 states. [2020-10-14 00:57:07,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100505 states to 100505 states and 122896 transitions. [2020-10-14 00:57:07,731 INFO L78 Accepts]: Start accepts. Automaton has 100505 states and 122896 transitions. Word has length 370 [2020-10-14 00:57:07,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:57:07,731 INFO L479 AbstractCegarLoop]: Abstraction has 100505 states and 122896 transitions. [2020-10-14 00:57:07,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:57:07,731 INFO L276 IsEmpty]: Start isEmpty. Operand 100505 states and 122896 transitions. [2020-10-14 00:57:07,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-14 00:57:07,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:57:07,828 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:57:07,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:57:07,828 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:57:07,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:57:07,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1504144223, now seen corresponding path program 1 times [2020-10-14 00:57:07,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:57:07,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012281168] [2020-10-14 00:57:07,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:57:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:07,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:08,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:08,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:10,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:12,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:12,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-14 00:57:12,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:57:12,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-14 00:57:12,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:12,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:12,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:12,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 00:57:12,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 00:57:12,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:13,130 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:57:13,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:57:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:13,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:13,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:13,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:57:13,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:13,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:57:13,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:13,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:13,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:13,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:13,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:13,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:13,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:57:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:13,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:13,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:13,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 00:57:13,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:13,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 00:57:13,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:13,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:13,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:57:13,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:13,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 00:57:13,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:13,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 00:57:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:13,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:13,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:13,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 00:57:13,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:13,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-14 00:57:13,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:13,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:13,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:57:13,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 00:57:13,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:13,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-14 00:57:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:13,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:13,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:13,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:57:13,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:13,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 00:57:13,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:13,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:13,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:13,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 00:57:13,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:13,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:13,708 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 234 proven. 33 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-14 00:57:13,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012281168] [2020-10-14 00:57:13,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:57:13,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:57:13,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459719731] [2020-10-14 00:57:13,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:57:13,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:57:13,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:57:13,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:57:13,710 INFO L87 Difference]: Start difference. First operand 100505 states and 122896 transitions. Second operand 7 states. [2020-10-14 00:57:13,865 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:57:19,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:57:19,243 INFO L93 Difference]: Finished difference Result 262793 states and 332359 transitions. [2020-10-14 00:57:19,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 00:57:19,244 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 369 [2020-10-14 00:57:19,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:57:19,982 INFO L225 Difference]: With dead ends: 262793 [2020-10-14 00:57:19,983 INFO L226 Difference]: Without dead ends: 162501 [2020-10-14 00:57:20,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:57:20,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162501 states. [2020-10-14 00:57:26,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162501 to 160700. [2020-10-14 00:57:26,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160700 states. [2020-10-14 00:57:26,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160700 states to 160700 states and 196725 transitions. [2020-10-14 00:57:26,301 INFO L78 Accepts]: Start accepts. Automaton has 160700 states and 196725 transitions. Word has length 369 [2020-10-14 00:57:26,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:57:26,302 INFO L479 AbstractCegarLoop]: Abstraction has 160700 states and 196725 transitions. [2020-10-14 00:57:26,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:57:26,302 INFO L276 IsEmpty]: Start isEmpty. Operand 160700 states and 196725 transitions. [2020-10-14 00:57:26,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-10-14 00:57:26,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:57:26,546 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:57:26,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:57:26,546 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:57:26,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:57:26,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1211753822, now seen corresponding path program 1 times [2020-10-14 00:57:26,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:57:26,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482873842] [2020-10-14 00:57:26,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:57:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:26,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:26,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:27,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:27,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:31,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:31,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 410 [2020-10-14 00:57:31,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:57:31,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 00:57:31,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:31,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:31,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:57:31,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:57:31,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 00:57:31,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:31,836 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:57:31,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:57:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:31,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:31,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:31,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:57:31,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:31,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:57:31,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:31,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:31,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:57:31,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:31,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:57:31,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:31,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:57:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:31,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:32,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:32,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 00:57:32,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:32,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 00:57:32,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:32,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:32,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:32,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:57:32,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 00:57:32,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:32,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 00:57:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:32,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:32,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:32,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 00:57:32,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:32,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 00:57:32,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:32,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:32,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:32,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:57:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 00:57:32,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:32,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 00:57:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:32,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:32,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:32,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 00:57:32,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:32,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 00:57:32,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:32,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:32,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:32,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 00:57:32,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:32,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:32,437 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 230 proven. 112 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-14 00:57:32,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482873842] [2020-10-14 00:57:32,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:57:32,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:57:32,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829025876] [2020-10-14 00:57:32,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:57:32,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:57:32,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:57:32,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:57:32,439 INFO L87 Difference]: Start difference. First operand 160700 states and 196725 transitions. Second operand 7 states. [2020-10-14 00:57:32,579 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:57:39,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:57:39,663 INFO L93 Difference]: Finished difference Result 456695 states and 575121 transitions. [2020-10-14 00:57:39,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 00:57:39,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 396 [2020-10-14 00:57:39,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:57:40,600 INFO L225 Difference]: With dead ends: 456695 [2020-10-14 00:57:40,600 INFO L226 Difference]: Without dead ends: 296208 [2020-10-14 00:57:40,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:57:41,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296208 states. [2020-10-14 00:57:49,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296208 to 288259. [2020-10-14 00:57:49,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288259 states. [2020-10-14 00:57:51,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288259 states to 288259 states and 352481 transitions. [2020-10-14 00:57:51,209 INFO L78 Accepts]: Start accepts. Automaton has 288259 states and 352481 transitions. Word has length 396 [2020-10-14 00:57:51,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:57:51,210 INFO L479 AbstractCegarLoop]: Abstraction has 288259 states and 352481 transitions. [2020-10-14 00:57:51,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:57:51,210 INFO L276 IsEmpty]: Start isEmpty. Operand 288259 states and 352481 transitions. [2020-10-14 00:57:51,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-10-14 00:57:51,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:57:51,485 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:57:51,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 00:57:51,485 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:57:51,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:57:51,485 INFO L82 PathProgramCache]: Analyzing trace with hash -225574298, now seen corresponding path program 1 times [2020-10-14 00:57:51,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:57:51,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527255557] [2020-10-14 00:57:51,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:57:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:51,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:51,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:53,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:53,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-10-14 00:57:53,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:57:53,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1936 [2020-10-14 00:57:53,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:53,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:53,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:53,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 00:57:53,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 00:57:53,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:57,006 WARN L193 SmtUtils]: Spent 3.45 s on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:57:57,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:57:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:57,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:57,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:57,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:57:57,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:57,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:57:57,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:57,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:57,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:57,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:57:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:57,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:57,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:57,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 00:57:57,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:57,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 00:57:57,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:57,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:57:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 00:57:57,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:57,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 00:57:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:57,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:57,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:57,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:57:57,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:57,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 00:57:57,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:57,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:57,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:57,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:57:57,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 00:57:57,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:57,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-14 00:57:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:57,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:57,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:57,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 00:57:57,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:57,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 00:57:57,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:57,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:57,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:57,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 00:57:57,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:57,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:57,639 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 274 proven. 33 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-14 00:57:57,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527255557] [2020-10-14 00:57:57,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:57:57,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:57:57,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982620143] [2020-10-14 00:57:57,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:57:57,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:57:57,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:57:57,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:57:57,641 INFO L87 Difference]: Start difference. First operand 288259 states and 352481 transitions. Second operand 7 states. [2020-10-14 00:57:57,887 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:57:58,186 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:58:06,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:58:06,132 INFO L93 Difference]: Finished difference Result 513181 states and 654248 transitions. [2020-10-14 00:58:06,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:58:06,132 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 408 [2020-10-14 00:58:06,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:58:06,909 INFO L225 Difference]: With dead ends: 513181 [2020-10-14 00:58:06,909 INFO L226 Difference]: Without dead ends: 225135 [2020-10-14 00:58:07,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:58:07,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225135 states. [2020-10-14 00:58:14,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225135 to 219954. [2020-10-14 00:58:14,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219954 states. [2020-10-14 00:58:15,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219954 states to 219954 states and 261571 transitions. [2020-10-14 00:58:15,093 INFO L78 Accepts]: Start accepts. Automaton has 219954 states and 261571 transitions. Word has length 408 [2020-10-14 00:58:15,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:58:15,093 INFO L479 AbstractCegarLoop]: Abstraction has 219954 states and 261571 transitions. [2020-10-14 00:58:15,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:58:15,093 INFO L276 IsEmpty]: Start isEmpty. Operand 219954 states and 261571 transitions. [2020-10-14 00:58:15,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-10-14 00:58:15,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:58:15,317 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:58:15,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 00:58:15,317 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:58:15,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:58:15,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1439787607, now seen corresponding path program 1 times [2020-10-14 00:58:15,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:58:15,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981967812] [2020-10-14 00:58:15,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:58:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:15,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:15,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:17,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:20,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:20,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 441 [2020-10-14 00:58:20,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:58:20,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 00:58:20,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:20,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:20,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:58:20,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 00:58:20,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 00:58:20,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:20,598 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:58:20,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:58:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:20,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:20,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:20,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:58:20,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:20,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:58:20,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:20,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:20,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:20,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:20,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:20,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:20,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:58:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:20,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:20,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:20,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 00:58:20,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:20,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 00:58:20,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:20,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:20,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:58:20,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:20,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 00:58:20,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:20,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 00:58:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:20,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:20,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:20,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:58:20,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:20,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 00:58:20,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:20,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:20,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:58:20,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:58:20,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:58:20,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:20,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-14 00:58:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:20,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:20,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:20,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:58:20,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:20,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 00:58:20,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:20,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:20,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:20,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 00:58:20,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:20,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:20,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-14 00:58:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:21,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:21,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:21,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 00:58:21,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:21,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 00:58:21,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:21,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:21,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:21,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 00:58:21,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:21,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:21,201 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 275 proven. 30 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-10-14 00:58:21,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981967812] [2020-10-14 00:58:21,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:58:21,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:58:21,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733944819] [2020-10-14 00:58:21,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:58:21,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:58:21,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:58:21,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:58:21,203 INFO L87 Difference]: Start difference. First operand 219954 states and 261571 transitions. Second operand 7 states. [2020-10-14 00:58:21,368 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 130