/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:57:28,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:57:28,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:57:28,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:57:28,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:57:28,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:57:28,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:57:28,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:57:28,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:57:28,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:57:28,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:57:28,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:57:28,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:57:28,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:57:28,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:57:28,739 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:57:28,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:57:28,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:57:28,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:57:28,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:57:28,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:57:28,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:57:28,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:57:28,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:57:28,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:57:28,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:57:28,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:57:28,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:57:28,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:57:28,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:57:28,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:57:28,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:57:28,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:57:28,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:57:28,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:57:28,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:57:28,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:57:28,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:57:28,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:57:28,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:57:28,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:57:28,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:57:28,830 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:57:28,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:57:28,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:57:28,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:57:28,834 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:57:28,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:57:28,834 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:57:28,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:57:28,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:57:28,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:57:28,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:57:28,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:57:28,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:57:28,835 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:57:28,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:57:28,836 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:57:28,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:57:28,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:57:28,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:57:28,836 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:57:28,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:57:28,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:57:28,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:57:28,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:57:28,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:57:28,840 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:57:28,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:57:28,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:57:28,840 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:57:28,840 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:57:29,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:57:29,181 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:57:29,184 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:57:29,186 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:57:29,186 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:57:29,187 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label06.c [2020-10-13 08:57:29,239 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf31e9d3d/c343ab511e4f4f92adecde81a90380b1/FLAG965cb6410 [2020-10-13 08:57:29,905 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:57:29,906 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label06.c [2020-10-13 08:57:29,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf31e9d3d/c343ab511e4f4f92adecde81a90380b1/FLAG965cb6410 [2020-10-13 08:57:30,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf31e9d3d/c343ab511e4f4f92adecde81a90380b1 [2020-10-13 08:57:30,067 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:57:30,069 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:57:30,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:57:30,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:57:30,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:57:30,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:57:30" (1/1) ... [2020-10-13 08:57:30,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217a2c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:30, skipping insertion in model container [2020-10-13 08:57:30,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:57:30" (1/1) ... [2020-10-13 08:57:30,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:57:30,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:57:31,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:57:31,177 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:57:31,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:57:31,458 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:57:31,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:31 WrapperNode [2020-10-13 08:57:31,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:57:31,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:57:31,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:57:31,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:57:31,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:31" (1/1) ... [2020-10-13 08:57:31,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:31" (1/1) ... [2020-10-13 08:57:31,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:31" (1/1) ... [2020-10-13 08:57:31,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:31" (1/1) ... [2020-10-13 08:57:31,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:31" (1/1) ... [2020-10-13 08:57:31,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:31" (1/1) ... [2020-10-13 08:57:31,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:31" (1/1) ... [2020-10-13 08:57:31,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:57:31,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:57:31,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:57:31,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:57:31,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:57:31,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:57:31,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:57:31,759 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:57:31,759 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:57:31,759 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:57:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:57:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:57:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:57:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:57:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:57:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:57:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:57:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:57:37,497 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:57:37,497 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:57:37,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:57:37 BoogieIcfgContainer [2020-10-13 08:57:37,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:57:37,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:57:37,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:57:37,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:57:37,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:57:30" (1/3) ... [2020-10-13 08:57:37,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63fb421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:57:37, skipping insertion in model container [2020-10-13 08:57:37,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:31" (2/3) ... [2020-10-13 08:57:37,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63fb421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:57:37, skipping insertion in model container [2020-10-13 08:57:37,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:57:37" (3/3) ... [2020-10-13 08:57:37,516 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label06.c [2020-10-13 08:57:37,528 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:57:37,538 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:57:37,554 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:57:37,585 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:57:37,585 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:57:37,586 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:57:37,586 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:57:37,586 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:57:37,586 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:57:37,586 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:57:37,586 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:57:37,616 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-13 08:57:37,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 08:57:37,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:57:37,627 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] [2020-10-13 08:57:37,628 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:57:37,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:57:37,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1090082560, now seen corresponding path program 1 times [2020-10-13 08:57:37,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:57:37,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838876354] [2020-10-13 08:57:37,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:57:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:37,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:38,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:38,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:57:38,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:57:38,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-10-13 08:57:38,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:38,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:57:38,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:57:38,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:57:38,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:57:38,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:57:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:38,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:38,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:38,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:57:38,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:57:38,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:57:38,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:38,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:57:38,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:57:38,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:57:38,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:57:38,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:57:38,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838876354] [2020-10-13 08:57:38,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:57:38,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:57:38,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027903736] [2020-10-13 08:57:38,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:57:38,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:57:38,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:57:38,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:57:38,485 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-13 08:57:43,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:57:43,950 INFO L93 Difference]: Finished difference Result 1224 states and 2200 transitions. [2020-10-13 08:57:43,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:57:43,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-13 08:57:43,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:57:43,977 INFO L225 Difference]: With dead ends: 1224 [2020-10-13 08:57:43,977 INFO L226 Difference]: Without dead ends: 708 [2020-10-13 08:57:43,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:57:44,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-13 08:57:44,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 694. [2020-10-13 08:57:44,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-13 08:57:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1080 transitions. [2020-10-13 08:57:44,102 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1080 transitions. Word has length 62 [2020-10-13 08:57:44,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:57:44,102 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1080 transitions. [2020-10-13 08:57:44,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:57:44,103 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1080 transitions. [2020-10-13 08:57:44,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 08:57:44,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:57:44,109 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:57:44,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:57:44,110 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:57:44,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:57:44,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1429336927, now seen corresponding path program 1 times [2020-10-13 08:57:44,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:57:44,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70832541] [2020-10-13 08:57:44,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:57:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:44,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:44,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:45,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:45,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:45,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:45,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 08:57:45,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:57:45,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1689 [2020-10-13 08:57:45,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:45,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:57:45,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 08:57:45,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 08:57:45,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:57:46,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:57:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:46,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:46,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:46,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:57:46,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:57:46,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:57:46,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:46,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:57:46,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:57:46,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:57:46,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:57:46,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:57:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:46,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:46,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:46,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:57:46,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:57:46,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 08:57:46,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:46,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:57:46,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:57:46,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:57:46,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:57:46,343 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:57:46,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70832541] [2020-10-13 08:57:46,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:57:46,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:57:46,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005393704] [2020-10-13 08:57:46,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:57:46,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:57:46,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:57:46,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:57:46,348 INFO L87 Difference]: Start difference. First operand 694 states and 1080 transitions. Second operand 5 states. [2020-10-13 08:57:51,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:57:51,480 INFO L93 Difference]: Finished difference Result 1110 states and 1766 transitions. [2020-10-13 08:57:51,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:57:51,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-13 08:57:51,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:57:51,492 INFO L225 Difference]: With dead ends: 1110 [2020-10-13 08:57:51,493 INFO L226 Difference]: Without dead ends: 700 [2020-10-13 08:57:51,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:57:51,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-10-13 08:57:51,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 694. [2020-10-13 08:57:51,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-13 08:57:51,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1078 transitions. [2020-10-13 08:57:51,524 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1078 transitions. Word has length 132 [2020-10-13 08:57:51,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:57:51,525 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1078 transitions. [2020-10-13 08:57:51,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:57:51,525 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1078 transitions. [2020-10-13 08:57:51,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 08:57:51,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:57:51,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:57:51,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:57:51,534 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:57:51,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:57:51,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1906385947, now seen corresponding path program 1 times [2020-10-13 08:57:51,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:57:51,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842262280] [2020-10-13 08:57:51,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:57:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:51,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:51,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:52,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:53,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:53,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:53,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 08:57:53,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:57:53,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1746 [2020-10-13 08:57:53,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:57:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 08:57:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 08:57:53,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:57:53,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:57:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:53,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:53,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:53,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:57:53,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:57:53,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:57:53,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:53,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:57:53,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:57:53,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:57:53,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:57:53,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:57:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:53,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:53,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:53,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:57:53,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:57:53,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-13 08:57:53,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:53,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:57:53,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:57:53,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:57:53,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:57:53,702 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:57:53,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842262280] [2020-10-13 08:57:53,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:57:53,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:57:53,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427730283] [2020-10-13 08:57:53,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:57:53,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:57:53,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:57:53,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:57:53,706 INFO L87 Difference]: Start difference. First operand 694 states and 1078 transitions. Second operand 5 states. [2020-10-13 08:58:01,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:58:01,539 INFO L93 Difference]: Finished difference Result 1093 states and 1746 transitions. [2020-10-13 08:58:01,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:58:01,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-13 08:58:01,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:58:01,553 INFO L225 Difference]: With dead ends: 1093 [2020-10-13 08:58:01,553 INFO L226 Difference]: Without dead ends: 700 [2020-10-13 08:58:01,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:58:01,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-10-13 08:58:01,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 694. [2020-10-13 08:58:01,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-13 08:58:01,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1076 transitions. [2020-10-13 08:58:01,587 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1076 transitions. Word has length 134 [2020-10-13 08:58:01,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:58:01,587 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1076 transitions. [2020-10-13 08:58:01,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:58:01,588 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1076 transitions. [2020-10-13 08:58:01,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-13 08:58:01,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:01,594 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:58:01,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:58:01,595 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:01,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:01,596 INFO L82 PathProgramCache]: Analyzing trace with hash 852653271, now seen corresponding path program 1 times [2020-10-13 08:58:01,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:01,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993980620] [2020-10-13 08:58:01,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:01,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:01,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:02,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:02,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:02,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 08:58:02,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:58:02,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1323 [2020-10-13 08:58:02,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:02,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:58:02,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 08:58:02,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 08:58:02,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:03,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:03,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:03,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:03,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:03,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:03,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:58:03,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:03,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:03,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:03,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:03,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:03,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:58:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:03,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:03,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:03,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 08:58:03,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:03,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 08:58:03,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:03,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:03,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:03,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:58:03,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:03,295 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:58:03,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993980620] [2020-10-13 08:58:03,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:58:03,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:58:03,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503452379] [2020-10-13 08:58:03,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:58:03,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:03,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:58:03,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:58:03,301 INFO L87 Difference]: Start difference. First operand 694 states and 1076 transitions. Second operand 5 states. [2020-10-13 08:58:12,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:58:12,659 INFO L93 Difference]: Finished difference Result 1110 states and 1760 transitions. [2020-10-13 08:58:12,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:58:12,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-10-13 08:58:12,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:58:12,665 INFO L225 Difference]: With dead ends: 1110 [2020-10-13 08:58:12,665 INFO L226 Difference]: Without dead ends: 700 [2020-10-13 08:58:12,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:58:12,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-10-13 08:58:12,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 694. [2020-10-13 08:58:12,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-13 08:58:12,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1074 transitions. [2020-10-13 08:58:12,687 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1074 transitions. Word has length 136 [2020-10-13 08:58:12,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:58:12,688 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1074 transitions. [2020-10-13 08:58:12,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:58:12,688 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1074 transitions. [2020-10-13 08:58:12,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-13 08:58:12,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:12,690 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:58:12,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:58:12,691 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:12,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:12,691 INFO L82 PathProgramCache]: Analyzing trace with hash 2080462577, now seen corresponding path program 1 times [2020-10-13 08:58:12,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:12,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663516613] [2020-10-13 08:58:12,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:12,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:12,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:13,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:14,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:14,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:14,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-13 08:58:14,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:58:14,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1530 [2020-10-13 08:58:14,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:14,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:58:14,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:58:14,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 08:58:14,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:14,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:14,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:14,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:14,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:14,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:14,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:58:14,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:14,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:14,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:14,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:14,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:58:14,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:58:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:14,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:14,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:14,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:58:14,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:14,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 08:58:14,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:14,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:14,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:14,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:58:14,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:14,571 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:58:14,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663516613] [2020-10-13 08:58:14,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:58:14,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:58:14,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695706746] [2020-10-13 08:58:14,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:58:14,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:14,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:58:14,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:58:14,574 INFO L87 Difference]: Start difference. First operand 694 states and 1074 transitions. Second operand 5 states. [2020-10-13 08:58:22,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:58:22,053 INFO L93 Difference]: Finished difference Result 1113 states and 1761 transitions. [2020-10-13 08:58:22,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:58:22,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-13 08:58:22,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:58:22,065 INFO L225 Difference]: With dead ends: 1113 [2020-10-13 08:58:22,065 INFO L226 Difference]: Without dead ends: 700 [2020-10-13 08:58:22,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:58:22,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-10-13 08:58:22,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 694. [2020-10-13 08:58:22,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-13 08:58:22,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1063 transitions. [2020-10-13 08:58:22,092 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1063 transitions. Word has length 137 [2020-10-13 08:58:22,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:58:22,093 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1063 transitions. [2020-10-13 08:58:22,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:58:22,093 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1063 transitions. [2020-10-13 08:58:22,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-13 08:58:22,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:22,095 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:58:22,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:58:22,098 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:22,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:22,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1891493267, now seen corresponding path program 1 times [2020-10-13 08:58:22,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:22,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971272504] [2020-10-13 08:58:22,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:22,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:22,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:22,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:23,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:23,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:58:23,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:58:23,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1288 [2020-10-13 08:58:23,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:58:23,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 08:58:23,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 08:58:23,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:23,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:23,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:23,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:23,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:23,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:23,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:58:23,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:23,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:23,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:58:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:23,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:23,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:23,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:58:23,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:23,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 08:58:23,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:23,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:23,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:23,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:58:23,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:23,700 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:58:23,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971272504] [2020-10-13 08:58:23,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:58:23,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:58:23,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785533996] [2020-10-13 08:58:23,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:58:23,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:23,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:58:23,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:58:23,704 INFO L87 Difference]: Start difference. First operand 694 states and 1063 transitions. Second operand 5 states. [2020-10-13 08:58:29,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:58:29,080 INFO L93 Difference]: Finished difference Result 1089 states and 1718 transitions. [2020-10-13 08:58:29,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:58:29,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-13 08:58:29,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:58:29,085 INFO L225 Difference]: With dead ends: 1089 [2020-10-13 08:58:29,085 INFO L226 Difference]: Without dead ends: 700 [2020-10-13 08:58:29,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:58:29,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-10-13 08:58:29,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 694. [2020-10-13 08:58:29,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-13 08:58:29,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1061 transitions. [2020-10-13 08:58:29,105 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1061 transitions. Word has length 138 [2020-10-13 08:58:29,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:58:29,106 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1061 transitions. [2020-10-13 08:58:29,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:58:29,106 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1061 transitions. [2020-10-13 08:58:29,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 08:58:29,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:29,108 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:58:29,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:58:29,108 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:29,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:29,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1398593781, now seen corresponding path program 1 times [2020-10-13 08:58:29,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:29,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482721372] [2020-10-13 08:58:29,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:29,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:29,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:30,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:30,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 08:58:30,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:58:30,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1104 [2020-10-13 08:58:30,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:30,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:58:30,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 08:58:30,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 08:58:30,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:30,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:30,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:30,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:30,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:30,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:30,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:58:30,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:30,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:30,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:30,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:30,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:30,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:58:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:30,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:30,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:30,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 08:58:30,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:30,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 08:58:30,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:30,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:30,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:30,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 08:58:30,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:30,462 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:58:30,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482721372] [2020-10-13 08:58:30,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:58:30,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:58:30,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70476047] [2020-10-13 08:58:30,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:58:30,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:30,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:58:30,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:58:30,466 INFO L87 Difference]: Start difference. First operand 694 states and 1061 transitions. Second operand 5 states. [2020-10-13 08:58:39,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:58:39,130 INFO L93 Difference]: Finished difference Result 1394 states and 2249 transitions. [2020-10-13 08:58:39,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:58:39,131 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-13 08:58:39,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:58:39,137 INFO L225 Difference]: With dead ends: 1394 [2020-10-13 08:58:39,138 INFO L226 Difference]: Without dead ends: 1021 [2020-10-13 08:58:39,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:58:39,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2020-10-13 08:58:39,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 1015. [2020-10-13 08:58:39,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-10-13 08:58:39,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1432 transitions. [2020-10-13 08:58:39,168 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1432 transitions. Word has length 142 [2020-10-13 08:58:39,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:58:39,169 INFO L479 AbstractCegarLoop]: Abstraction has 1015 states and 1432 transitions. [2020-10-13 08:58:39,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:58:39,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1432 transitions. [2020-10-13 08:58:39,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-13 08:58:39,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:39,171 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:58:39,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:58:39,172 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:39,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:39,172 INFO L82 PathProgramCache]: Analyzing trace with hash -502227487, now seen corresponding path program 1 times [2020-10-13 08:58:39,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:39,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359838271] [2020-10-13 08:58:39,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:39,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:39,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:39,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:39,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 08:58:39,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:58:39,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 777 [2020-10-13 08:58:39,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:39,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:58:39,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 08:58:39,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 08:58:39,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:40,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:40,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:40,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:40,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:40,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:40,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:58:40,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:40,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:40,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:40,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:40,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:40,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:58:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:40,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:40,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:40,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 08:58:40,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:40,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 08:58:40,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:40,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:40,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:40,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 08:58:40,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:40,220 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:58:40,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359838271] [2020-10-13 08:58:40,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:58:40,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:58:40,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325675472] [2020-10-13 08:58:40,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:58:40,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:40,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:58:40,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:58:40,224 INFO L87 Difference]: Start difference. First operand 1015 states and 1432 transitions. Second operand 5 states. [2020-10-13 08:58:50,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:58:50,329 INFO L93 Difference]: Finished difference Result 2031 states and 2995 transitions. [2020-10-13 08:58:50,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:58:50,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-13 08:58:50,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:58:50,338 INFO L225 Difference]: With dead ends: 2031 [2020-10-13 08:58:50,338 INFO L226 Difference]: Without dead ends: 1337 [2020-10-13 08:58:50,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:58:50,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2020-10-13 08:58:50,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1331. [2020-10-13 08:58:50,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2020-10-13 08:58:50,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1810 transitions. [2020-10-13 08:58:50,374 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1810 transitions. Word has length 145 [2020-10-13 08:58:50,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:58:50,374 INFO L479 AbstractCegarLoop]: Abstraction has 1331 states and 1810 transitions. [2020-10-13 08:58:50,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:58:50,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1810 transitions. [2020-10-13 08:58:50,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 08:58:50,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:50,377 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:58:50,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:58:50,378 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:50,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:50,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1377518015, now seen corresponding path program 1 times [2020-10-13 08:58:50,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:50,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360658403] [2020-10-13 08:58:50,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:50,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:50,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:51,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:51,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 08:58:51,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:58:51,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 776 [2020-10-13 08:58:51,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:51,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:58:51,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-13 08:58:51,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 08:58:51,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:51,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:51,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:51,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:51,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:51,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:51,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:58:51,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:51,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:51,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:51,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:51,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:58:51,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:58:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:51,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:51,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:51,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:58:51,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:51,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 08:58:51,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:51,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:51,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:51,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 08:58:51,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:51,413 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:58:51,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360658403] [2020-10-13 08:58:51,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:58:51,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:58:51,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909959653] [2020-10-13 08:58:51,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:58:51,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:51,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:58:51,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:58:51,420 INFO L87 Difference]: Start difference. First operand 1331 states and 1810 transitions. Second operand 5 states. [2020-10-13 08:59:01,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:01,659 INFO L93 Difference]: Finished difference Result 3292 states and 4524 transitions. [2020-10-13 08:59:01,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:59:01,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-13 08:59:01,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:01,673 INFO L225 Difference]: With dead ends: 3292 [2020-10-13 08:59:01,673 INFO L226 Difference]: Without dead ends: 2282 [2020-10-13 08:59:01,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:59:01,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2020-10-13 08:59:01,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2264. [2020-10-13 08:59:01,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2264 states. [2020-10-13 08:59:01,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2264 states to 2264 states and 3062 transitions. [2020-10-13 08:59:01,737 INFO L78 Accepts]: Start accepts. Automaton has 2264 states and 3062 transitions. Word has length 148 [2020-10-13 08:59:01,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:01,738 INFO L479 AbstractCegarLoop]: Abstraction has 2264 states and 3062 transitions. [2020-10-13 08:59:01,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:59:01,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2264 states and 3062 transitions. [2020-10-13 08:59:01,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-13 08:59:01,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:01,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:59:01,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:59:01,742 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:01,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:01,742 INFO L82 PathProgramCache]: Analyzing trace with hash 823490867, now seen corresponding path program 1 times [2020-10-13 08:59:01,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:01,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869130278] [2020-10-13 08:59:01,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:01,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:01,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:02,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:02,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 08:59:02,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:59:02,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 796 [2020-10-13 08:59:02,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:02,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:02,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-13 08:59:02,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 08:59:02,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:02,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:02,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:02,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:02,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:02,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:02,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:59:02,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:02,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:02,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:02,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:02,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:59:02,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:02,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:02,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:02,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 08:59:02,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:02,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 08:59:02,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:02,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:02,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:02,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 08:59:02,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:02,886 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:59:02,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869130278] [2020-10-13 08:59:02,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:59:02,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:59:02,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725828166] [2020-10-13 08:59:02,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:59:02,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:02,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:59:02,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:59:02,889 INFO L87 Difference]: Start difference. First operand 2264 states and 3062 transitions. Second operand 5 states. [2020-10-13 08:59:14,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:14,003 INFO L93 Difference]: Finished difference Result 6384 states and 8795 transitions. [2020-10-13 08:59:14,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:59:14,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-13 08:59:14,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:14,026 INFO L225 Difference]: With dead ends: 6384 [2020-10-13 08:59:14,026 INFO L226 Difference]: Without dead ends: 4440 [2020-10-13 08:59:14,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:59:14,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4440 states. [2020-10-13 08:59:14,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4440 to 4432. [2020-10-13 08:59:14,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4432 states. [2020-10-13 08:59:14,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4432 states to 4432 states and 5916 transitions. [2020-10-13 08:59:14,218 INFO L78 Accepts]: Start accepts. Automaton has 4432 states and 5916 transitions. Word has length 161 [2020-10-13 08:59:14,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:14,219 INFO L479 AbstractCegarLoop]: Abstraction has 4432 states and 5916 transitions. [2020-10-13 08:59:14,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:59:14,219 INFO L276 IsEmpty]: Start isEmpty. Operand 4432 states and 5916 transitions. [2020-10-13 08:59:14,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-13 08:59:14,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:14,226 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:59:14,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:59:14,226 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:14,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:14,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1356443063, now seen corresponding path program 1 times [2020-10-13 08:59:14,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:14,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139578121] [2020-10-13 08:59:14,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:14,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:14,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:15,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:15,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 08:59:15,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:59:15,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 984 [2020-10-13 08:59:15,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:15,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:15,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-13 08:59:15,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 08:59:15,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:59:15,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:15,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:15,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:15,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:15,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:15,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:59:15,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:15,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:15,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:15,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:15,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:59:15,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:15,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:15,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:15,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 08:59:15,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:15,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-13 08:59:15,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:15,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:15,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:15,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 08:59:15,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:59:15,738 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:59:15,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139578121] [2020-10-13 08:59:15,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:59:15,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:59:15,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998833243] [2020-10-13 08:59:15,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:59:15,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:15,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:59:15,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:59:15,742 INFO L87 Difference]: Start difference. First operand 4432 states and 5916 transitions. Second operand 5 states. [2020-10-13 08:59:27,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:27,470 INFO L93 Difference]: Finished difference Result 9792 states and 13275 transitions. [2020-10-13 08:59:27,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:59:27,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-10-13 08:59:27,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:27,499 INFO L225 Difference]: With dead ends: 9792 [2020-10-13 08:59:27,499 INFO L226 Difference]: Without dead ends: 5989 [2020-10-13 08:59:27,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:59:27,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5989 states. [2020-10-13 08:59:27,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5989 to 5979. [2020-10-13 08:59:27,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5979 states. [2020-10-13 08:59:27,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5979 states to 5979 states and 7678 transitions. [2020-10-13 08:59:27,649 INFO L78 Accepts]: Start accepts. Automaton has 5979 states and 7678 transitions. Word has length 191 [2020-10-13 08:59:27,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:27,650 INFO L479 AbstractCegarLoop]: Abstraction has 5979 states and 7678 transitions. [2020-10-13 08:59:27,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:59:27,650 INFO L276 IsEmpty]: Start isEmpty. Operand 5979 states and 7678 transitions. [2020-10-13 08:59:27,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-13 08:59:27,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:27,655 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:59:27,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:59:27,656 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:27,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:27,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1659336689, now seen corresponding path program 1 times [2020-10-13 08:59:27,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:27,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193555512] [2020-10-13 08:59:27,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:27,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:27,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:28,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:28,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-13 08:59:28,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:59:28,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1167 [2020-10-13 08:59:28,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:28,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:28,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-10-13 08:59:28,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 08:59:28,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:59:29,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:29,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:29,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:29,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:29,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:29,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:59:29,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:29,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:29,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:29,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:29,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:29,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:29,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:29,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:29,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 08:59:29,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:29,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-13 08:59:29,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:29,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:29,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:29,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-13 08:59:29,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:29,303 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:59:29,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193555512] [2020-10-13 08:59:29,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:59:29,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:59:29,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806824443] [2020-10-13 08:59:29,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:59:29,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:29,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:59:29,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:59:29,306 INFO L87 Difference]: Start difference. First operand 5979 states and 7678 transitions. Second operand 5 states. [2020-10-13 08:59:40,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:40,338 INFO L93 Difference]: Finished difference Result 12886 states and 16792 transitions. [2020-10-13 08:59:40,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:59:40,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-10-13 08:59:40,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:40,377 INFO L225 Difference]: With dead ends: 12886 [2020-10-13 08:59:40,377 INFO L226 Difference]: Without dead ends: 7536 [2020-10-13 08:59:40,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:59:40,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7536 states. [2020-10-13 08:59:40,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7536 to 6912. [2020-10-13 08:59:40,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6912 states. [2020-10-13 08:59:40,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6912 states to 6912 states and 8761 transitions. [2020-10-13 08:59:40,571 INFO L78 Accepts]: Start accepts. Automaton has 6912 states and 8761 transitions. Word has length 198 [2020-10-13 08:59:40,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:40,572 INFO L479 AbstractCegarLoop]: Abstraction has 6912 states and 8761 transitions. [2020-10-13 08:59:40,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:59:40,573 INFO L276 IsEmpty]: Start isEmpty. Operand 6912 states and 8761 transitions. [2020-10-13 08:59:40,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-13 08:59:40,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:40,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:59:40,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 08:59:40,582 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:40,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:40,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1823442593, now seen corresponding path program 1 times [2020-10-13 08:59:40,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:40,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640688935] [2020-10-13 08:59:40,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:40,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:40,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:41,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:42,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:42,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-13 08:59:42,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:59:42,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1628 [2020-10-13 08:59:42,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:42,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:42,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 08:59:42,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 08:59:42,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:42,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:42,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:42,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:42,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:42,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:42,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:59:42,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:42,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:42,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:42,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:42,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:42,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:42,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:42,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:42,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 08:59:42,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:42,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-13 08:59:42,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:42,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:42,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:42,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-13 08:59:42,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:42,819 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:59:42,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640688935] [2020-10-13 08:59:42,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:59:42,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:59:42,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698218062] [2020-10-13 08:59:42,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:59:42,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:42,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:59:42,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:59:42,823 INFO L87 Difference]: Start difference. First operand 6912 states and 8761 transitions. Second operand 5 states. [2020-10-13 08:59:50,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:50,225 INFO L93 Difference]: Finished difference Result 13217 states and 16742 transitions. [2020-10-13 08:59:50,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:59:50,227 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2020-10-13 08:59:50,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:50,260 INFO L225 Difference]: With dead ends: 13217 [2020-10-13 08:59:50,260 INFO L226 Difference]: Without dead ends: 6920 [2020-10-13 08:59:50,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:59:50,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6920 states. [2020-10-13 08:59:50,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6920 to 6912. [2020-10-13 08:59:50,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6912 states. [2020-10-13 08:59:50,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6912 states to 6912 states and 8755 transitions. [2020-10-13 08:59:50,431 INFO L78 Accepts]: Start accepts. Automaton has 6912 states and 8755 transitions. Word has length 211 [2020-10-13 08:59:50,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:50,431 INFO L479 AbstractCegarLoop]: Abstraction has 6912 states and 8755 transitions. [2020-10-13 08:59:50,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:59:50,432 INFO L276 IsEmpty]: Start isEmpty. Operand 6912 states and 8755 transitions. [2020-10-13 08:59:50,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-13 08:59:50,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:50,445 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, 2, 2, 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] [2020-10-13 08:59:50,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 08:59:50,446 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:50,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:50,447 INFO L82 PathProgramCache]: Analyzing trace with hash -605728686, now seen corresponding path program 1 times [2020-10-13 08:59:50,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:50,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317020855] [2020-10-13 08:59:50,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:50,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:50,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:51,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:51,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:55,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:55,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-13 08:59:55,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:59:55,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4731 [2020-10-13 08:59:55,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:55,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:59:55,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-10-13 08:59:55,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 08:59:55,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:55,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:55,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:55,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:55,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:55,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:55,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:59:55,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:55,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:55,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:55,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:55,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:55,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:55,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:55,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:55,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 08:59:55,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:55,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 08:59:55,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:55,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:55,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:55,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:55,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:55,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 08:59:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:55,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:55,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:55,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:59:55,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:55,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 08:59:55,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:55,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:55,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:55,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 08:59:55,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:56,019 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-13 08:59:56,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317020855] [2020-10-13 08:59:56,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:59:56,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:59:56,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23257747] [2020-10-13 08:59:56,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:59:56,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:56,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:59:56,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:59:56,022 INFO L87 Difference]: Start difference. First operand 6912 states and 8755 transitions. Second operand 8 states. [2020-10-13 08:59:58,695 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-10-13 08:59:59,830 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-10-13 09:00:00,124 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-10-13 09:00:08,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:00:08,217 INFO L93 Difference]: Finished difference Result 13491 states and 17177 transitions. [2020-10-13 09:00:08,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 09:00:08,224 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 242 [2020-10-13 09:00:08,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:00:08,251 INFO L225 Difference]: With dead ends: 13491 [2020-10-13 09:00:08,251 INFO L226 Difference]: Without dead ends: 6920 [2020-10-13 09:00:08,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-13 09:00:08,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6920 states. [2020-10-13 09:00:08,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6920 to 6912. [2020-10-13 09:00:08,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6912 states. [2020-10-13 09:00:08,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6912 states to 6912 states and 8496 transitions. [2020-10-13 09:00:08,410 INFO L78 Accepts]: Start accepts. Automaton has 6912 states and 8496 transitions. Word has length 242 [2020-10-13 09:00:08,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:00:08,411 INFO L479 AbstractCegarLoop]: Abstraction has 6912 states and 8496 transitions. [2020-10-13 09:00:08,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:00:08,411 INFO L276 IsEmpty]: Start isEmpty. Operand 6912 states and 8496 transitions. [2020-10-13 09:00:08,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-13 09:00:08,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:00:08,421 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, 2, 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] [2020-10-13 09:00:08,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:00:08,422 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:00:08,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:00:08,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1506564645, now seen corresponding path program 1 times [2020-10-13 09:00:08,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:00:08,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787201572] [2020-10-13 09:00:08,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:00:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:08,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:08,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:09,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:09,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:12,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:12,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 09:00:12,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:00:12,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3981 [2020-10-13 09:00:12,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:12,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:00:12,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 198 [2020-10-13 09:00:12,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 09:00:12,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:12,675 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 23 [2020-10-13 09:00:12,919 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 25 [2020-10-13 09:00:12,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:00:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:12,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:12,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:12,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:00:12,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:12,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:00:12,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:12,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:12,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:12,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:12,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:13,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:00:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:13,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:13,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:13,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:00:13,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:13,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:00:13,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:13,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:13,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:13,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:13,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:13,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 09:00:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:13,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:13,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:13,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:00:13,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:13,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 09:00:13,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:13,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:00:13,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:13,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 09:00:13,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:13,277 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-13 09:00:13,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787201572] [2020-10-13 09:00:13,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:00:13,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:00:13,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714281646] [2020-10-13 09:00:13,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:00:13,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:00:13,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:00:13,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:00:13,280 INFO L87 Difference]: Start difference. First operand 6912 states and 8496 transitions. Second operand 8 states. [2020-10-13 09:00:19,667 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-10-13 09:00:19,961 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-13 09:00:20,935 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-13 09:00:27,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:00:27,576 INFO L93 Difference]: Finished difference Result 13451 states and 16591 transitions. [2020-10-13 09:00:27,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 09:00:27,579 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 248 [2020-10-13 09:00:27,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:00:27,600 INFO L225 Difference]: With dead ends: 13451 [2020-10-13 09:00:27,600 INFO L226 Difference]: Without dead ends: 6920 [2020-10-13 09:00:27,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2020-10-13 09:00:27,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6920 states. [2020-10-13 09:00:27,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6920 to 6605. [2020-10-13 09:00:27,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6605 states. [2020-10-13 09:00:27,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6605 states to 6605 states and 8096 transitions. [2020-10-13 09:00:27,743 INFO L78 Accepts]: Start accepts. Automaton has 6605 states and 8096 transitions. Word has length 248 [2020-10-13 09:00:27,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:00:27,744 INFO L479 AbstractCegarLoop]: Abstraction has 6605 states and 8096 transitions. [2020-10-13 09:00:27,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:00:27,744 INFO L276 IsEmpty]: Start isEmpty. Operand 6605 states and 8096 transitions. [2020-10-13 09:00:27,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-13 09:00:27,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:00:27,755 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:00:27,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:00:27,755 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:00:27,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:00:27,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1114649634, now seen corresponding path program 1 times [2020-10-13 09:00:27,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:00:27,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780185978] [2020-10-13 09:00:27,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:00:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:27,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:27,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:27,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:29,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:29,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:32,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:32,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-13 09:00:32,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:00:32,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 09:00:32,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:32,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:00:32,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-10-13 09:00:32,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 09:00:32,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:33,117 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2020-10-13 09:00:33,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:00:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:33,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:33,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:33,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:00:33,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:33,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:00:33,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:33,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:33,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:33,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:00:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:33,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:33,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:33,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:00:33,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:33,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:00:33,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:33,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:33,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:33,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:33,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:33,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 09:00:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:33,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:33,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:33,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:00:33,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:33,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:00:33,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:33,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:00:33,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:33,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 09:00:33,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:33,548 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-13 09:00:33,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780185978] [2020-10-13 09:00:33,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:00:33,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:00:33,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455398547] [2020-10-13 09:00:33,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:00:33,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:00:33,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:00:33,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:00:33,551 INFO L87 Difference]: Start difference. First operand 6605 states and 8096 transitions. Second operand 8 states. [2020-10-13 09:00:36,856 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-13 09:00:47,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:00:47,409 INFO L93 Difference]: Finished difference Result 13346 states and 16411 transitions. [2020-10-13 09:00:47,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:00:47,418 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 252 [2020-10-13 09:00:47,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:00:47,455 INFO L225 Difference]: With dead ends: 13346 [2020-10-13 09:00:47,456 INFO L226 Difference]: Without dead ends: 6603 [2020-10-13 09:00:47,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:00:47,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6603 states. [2020-10-13 09:00:47,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6603 to 6294. [2020-10-13 09:00:47,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6294 states. [2020-10-13 09:00:47,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6294 states to 6294 states and 7649 transitions. [2020-10-13 09:00:47,595 INFO L78 Accepts]: Start accepts. Automaton has 6294 states and 7649 transitions. Word has length 252 [2020-10-13 09:00:47,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:00:47,596 INFO L479 AbstractCegarLoop]: Abstraction has 6294 states and 7649 transitions. [2020-10-13 09:00:47,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:00:47,596 INFO L276 IsEmpty]: Start isEmpty. Operand 6294 states and 7649 transitions. [2020-10-13 09:00:47,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-13 09:00:47,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:00:47,610 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:00:47,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:00:47,610 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:00:47,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:00:47,611 INFO L82 PathProgramCache]: Analyzing trace with hash -970533710, now seen corresponding path program 1 times [2020-10-13 09:00:47,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:00:47,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483792176] [2020-10-13 09:00:47,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:00:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:47,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:48,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:48,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-13 09:00:48,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:48,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 620 [2020-10-13 09:00:48,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:48,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:00:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:00:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-13 09:00:48,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:48,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:00:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:48,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:48,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:48,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:00:48,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:48,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:00:48,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:00:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:00:48,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:48,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:00:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:48,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:48,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:48,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-13 09:00:48,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:48,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-13 09:00:48,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:48,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:00:48,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:00:48,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 247 [2020-10-13 09:00:48,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:49,014 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:00:49,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483792176] [2020-10-13 09:00:49,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:00:49,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 09:00:49,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831681201] [2020-10-13 09:00:49,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:00:49,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:00:49,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:00:49,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:00:49,016 INFO L87 Difference]: Start difference. First operand 6294 states and 7649 transitions. Second operand 8 states. [2020-10-13 09:01:01,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:01,313 INFO L93 Difference]: Finished difference Result 13905 states and 17426 transitions. [2020-10-13 09:01:01,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 09:01:01,317 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 308 [2020-10-13 09:01:01,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:01,344 INFO L225 Difference]: With dead ends: 13905 [2020-10-13 09:01:01,345 INFO L226 Difference]: Without dead ends: 7924 [2020-10-13 09:01:01,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 09:01:01,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7924 states. [2020-10-13 09:01:01,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7924 to 7901. [2020-10-13 09:01:01,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7901 states. [2020-10-13 09:01:01,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7901 states to 7901 states and 9182 transitions. [2020-10-13 09:01:01,511 INFO L78 Accepts]: Start accepts. Automaton has 7901 states and 9182 transitions. Word has length 308 [2020-10-13 09:01:01,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:01,512 INFO L479 AbstractCegarLoop]: Abstraction has 7901 states and 9182 transitions. [2020-10-13 09:01:01,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:01:01,512 INFO L276 IsEmpty]: Start isEmpty. Operand 7901 states and 9182 transitions. [2020-10-13 09:01:01,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-13 09:01:01,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:01,526 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:01:01,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 09:01:01,526 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:01,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:01,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1465356757, now seen corresponding path program 1 times [2020-10-13 09:01:01,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:01,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494217707] [2020-10-13 09:01:01,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:01,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:01,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:01,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:03,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:03,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-13 09:01:03,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:01:03,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1834 [2020-10-13 09:01:03,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:03,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:01:03,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 261 [2020-10-13 09:01:03,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 09:01:03,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:03,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:03,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:03,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:03,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:03,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:03,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:01:03,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:03,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:03,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:03,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:03,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:03,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:01:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:03,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:03,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:03,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-13 09:01:03,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:03,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-13 09:01:03,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:03,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:03,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:03,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-13 09:01:03,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:03,941 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:01:03,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494217707] [2020-10-13 09:01:03,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:01:03,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:01:03,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797126449] [2020-10-13 09:01:03,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:01:03,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:03,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:01:03,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:01:03,944 INFO L87 Difference]: Start difference. First operand 7901 states and 9182 transitions. Second operand 5 states. [2020-10-13 09:01:14,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:14,060 INFO L93 Difference]: Finished difference Result 17987 states and 21400 transitions. [2020-10-13 09:01:14,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:01:14,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 313 [2020-10-13 09:01:14,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:14,101 INFO L225 Difference]: With dead ends: 17987 [2020-10-13 09:01:14,102 INFO L226 Difference]: Without dead ends: 10401 [2020-10-13 09:01:14,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:01:14,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10401 states. [2020-10-13 09:01:14,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10401 to 10398. [2020-10-13 09:01:14,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10398 states. [2020-10-13 09:01:14,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10398 states to 10398 states and 12039 transitions. [2020-10-13 09:01:14,316 INFO L78 Accepts]: Start accepts. Automaton has 10398 states and 12039 transitions. Word has length 313 [2020-10-13 09:01:14,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:14,317 INFO L479 AbstractCegarLoop]: Abstraction has 10398 states and 12039 transitions. [2020-10-13 09:01:14,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:01:14,317 INFO L276 IsEmpty]: Start isEmpty. Operand 10398 states and 12039 transitions. [2020-10-13 09:01:14,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-10-13 09:01:14,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:14,343 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:01:14,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 09:01:14,344 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:14,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:14,344 INFO L82 PathProgramCache]: Analyzing trace with hash 191402299, now seen corresponding path program 1 times [2020-10-13 09:01:14,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:14,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599368232] [2020-10-13 09:01:14,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:14,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:14,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:15,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:15,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-13 09:01:15,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:01:15,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-10-13 09:01:15,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:15,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:01:15,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-13 09:01:15,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 09:01:15,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:15,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:15,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:15,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:15,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:15,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:15,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:01:15,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:15,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:15,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:15,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:15,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:01:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:15,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:15,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:15,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:01:15,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:15,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-13 09:01:15,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:15,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:15,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:15,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-13 09:01:15,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:15,914 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:01:15,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599368232] [2020-10-13 09:01:15,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:01:15,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:01:15,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970531780] [2020-10-13 09:01:15,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:01:15,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:15,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:01:15,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:01:15,916 INFO L87 Difference]: Start difference. First operand 10398 states and 12039 transitions. Second operand 5 states. [2020-10-13 09:01:25,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:25,304 INFO L93 Difference]: Finished difference Result 22648 states and 26600 transitions. [2020-10-13 09:01:25,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:01:25,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 348 [2020-10-13 09:01:25,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:25,338 INFO L225 Difference]: With dead ends: 22648 [2020-10-13 09:01:25,338 INFO L226 Difference]: Without dead ends: 12563 [2020-10-13 09:01:25,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:01:25,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12563 states. [2020-10-13 09:01:25,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12563 to 11947. [2020-10-13 09:01:25,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11947 states. [2020-10-13 09:01:25,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11947 states to 11947 states and 13700 transitions. [2020-10-13 09:01:25,556 INFO L78 Accepts]: Start accepts. Automaton has 11947 states and 13700 transitions. Word has length 348 [2020-10-13 09:01:25,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:25,557 INFO L479 AbstractCegarLoop]: Abstraction has 11947 states and 13700 transitions. [2020-10-13 09:01:25,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:01:25,558 INFO L276 IsEmpty]: Start isEmpty. Operand 11947 states and 13700 transitions. [2020-10-13 09:01:25,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2020-10-13 09:01:25,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:25,585 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:01:25,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 09:01:25,586 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:25,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:25,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1289435935, now seen corresponding path program 1 times [2020-10-13 09:01:25,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:25,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439145695] [2020-10-13 09:01:25,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:25,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:25,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:26,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking...