/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/Problem12_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:14:04,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:14:04,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:14:04,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:14:04,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:14:04,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:14:04,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:14:04,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:14:04,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:14:04,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:14:04,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:14:04,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:14:04,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:14:04,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:14:04,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:14:04,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:14:04,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:14:04,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:14:04,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:14:04,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:14:04,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:14:04,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:14:04,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:14:04,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:14:04,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:14:04,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:14:04,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:14:04,462 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:14:04,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:14:04,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:14:04,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:14:04,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:14:04,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:14:04,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:14:04,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:14:04,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:14:04,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:14:04,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:14:04,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:14:04,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:14:04,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:14:04,471 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 08:14:04,493 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:14:04,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:14:04,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:14:04,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:14:04,495 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:14:04,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:14:04,496 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:14:04,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:14:04,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:14:04,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:14:04,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:14:04,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:14:04,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:14:04,497 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:14:04,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:14:04,497 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:14:04,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:14:04,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:14:04,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:14:04,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:14:04,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:14:04,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:14:04,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:14:04,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:14:04,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:14:04,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:14:04,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:14:04,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:14:04,500 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:14:04,500 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 08:14:04,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:14:04,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:14:04,822 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:14:04,824 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:14:04,824 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:14:04,825 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label01.c [2020-10-13 08:14:04,885 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6b6d8c7a/50133745a5774024ad2fb9af7a652124/FLAGdd726e794 [2020-10-13 08:14:05,665 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:14:05,666 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label01.c [2020-10-13 08:14:05,694 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6b6d8c7a/50133745a5774024ad2fb9af7a652124/FLAGdd726e794 [2020-10-13 08:14:05,779 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6b6d8c7a/50133745a5774024ad2fb9af7a652124 [2020-10-13 08:14:05,791 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:14:05,793 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:14:05,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:14:05,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:14:05,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:14:05,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:14:05" (1/1) ... [2020-10-13 08:14:05,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cb9d797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:05, skipping insertion in model container [2020-10-13 08:14:05,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:14:05" (1/1) ... [2020-10-13 08:14:05,813 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:14:05,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:14:07,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:14:07,605 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:14:08,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:14:08,304 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:14:08,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:08 WrapperNode [2020-10-13 08:14:08,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:14:08,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:14:08,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:14:08,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:14:08,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:08" (1/1) ... [2020-10-13 08:14:08,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:08" (1/1) ... [2020-10-13 08:14:08,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:08" (1/1) ... [2020-10-13 08:14:08,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:08" (1/1) ... [2020-10-13 08:14:08,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:08" (1/1) ... [2020-10-13 08:14:08,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:08" (1/1) ... [2020-10-13 08:14:08,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:08" (1/1) ... [2020-10-13 08:14:08,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:14:08,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:14:08,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:14:08,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:14:08,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:08" (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 08:14:08,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:14:08,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:14:08,668 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:14:08,668 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:14:08,668 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:14:08,669 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:14:08,669 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:14:08,669 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:14:08,669 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:14:08,669 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:14:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:14:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:14:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:14:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:14:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:14:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:14:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:14:13,423 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:14:13,423 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:14:13,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:14:13 BoogieIcfgContainer [2020-10-13 08:14:13,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:14:13,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:14:13,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:14:13,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:14:13,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:14:05" (1/3) ... [2020-10-13 08:14:13,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4170b7b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:14:13, skipping insertion in model container [2020-10-13 08:14:13,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:08" (2/3) ... [2020-10-13 08:14:13,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4170b7b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:14:13, skipping insertion in model container [2020-10-13 08:14:13,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:14:13" (3/3) ... [2020-10-13 08:14:13,449 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label01.c [2020-10-13 08:14:13,460 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:14:13,477 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:14:13,493 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:14:13,533 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:14:13,534 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:14:13,534 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:14:13,534 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:14:13,534 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:14:13,534 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:14:13,535 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:14:13,535 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:14:13,579 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:14:13,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 08:14:13,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:13,590 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] [2020-10-13 08:14:13,591 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:13,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:13,597 INFO L82 PathProgramCache]: Analyzing trace with hash 891941962, now seen corresponding path program 1 times [2020-10-13 08:14:13,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:13,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233097196] [2020-10-13 08:14:13,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:13,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:14,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:14,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 08:14:14,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:14,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-13 08:14:14,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:14,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:14:14,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:14:14,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 08:14:14,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:14:14,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:14:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:14,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:14,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:14,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:14:14,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:14,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 08:14:14,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:14,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:14,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:14,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:14:14,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:14:14,421 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 08:14:14,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233097196] [2020-10-13 08:14:14,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:14:14,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:14:14,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042135437] [2020-10-13 08:14:14,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:14:14,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:14:14,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:14:14,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:14:14,454 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-13 08:14:22,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:14:22,801 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-13 08:14:22,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:14:22,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-13 08:14:22,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:14:22,870 INFO L225 Difference]: With dead ends: 2471 [2020-10-13 08:14:22,870 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:14:22,890 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 08:14:22,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:14:23,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-13 08:14:23,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-13 08:14:23,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-13 08:14:23,134 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 53 [2020-10-13 08:14:23,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:14:23,136 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-13 08:14:23,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:14:23,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-13 08:14:23,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 08:14:23,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:23,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:14:23,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:14:23,151 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:23,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:23,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1072495395, now seen corresponding path program 1 times [2020-10-13 08:14:23,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:23,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240714573] [2020-10-13 08:14:23,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:23,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:23,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:23,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:23,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 08:14:23,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:14:23,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-10-13 08:14:23,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:23,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:23,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:14:23,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:14:23,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:14:23,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:14:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:23,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:23,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:23,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:14:23,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:23,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:14:23,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:23,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:23,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:23,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:23,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:14:23,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:14:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:23,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:24,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:24,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:14:24,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:24,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 08:14:24,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:24,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:24,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:24,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:14:24,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:14:24,169 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:14:24,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240714573] [2020-10-13 08:14:24,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:14:24,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:14:24,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734971121] [2020-10-13 08:14:24,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:14:24,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:14:24,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:14:24,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:14:24,173 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 5 states. [2020-10-13 08:14:29,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:14:29,932 INFO L93 Difference]: Finished difference Result 3162 states and 5113 transitions. [2020-10-13 08:14:29,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:14:29,933 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-13 08:14:29,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:14:29,943 INFO L225 Difference]: With dead ends: 3162 [2020-10-13 08:14:29,943 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:14:29,948 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 08:14:29,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:14:29,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-13 08:14:29,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-13 08:14:29,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2333 transitions. [2020-10-13 08:14:29,987 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2333 transitions. Word has length 128 [2020-10-13 08:14:29,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:14:29,988 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2333 transitions. [2020-10-13 08:14:29,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:14:29,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2333 transitions. [2020-10-13 08:14:29,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 08:14:29,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:29,990 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:14:29,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:14:29,991 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:29,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:29,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1257169410, now seen corresponding path program 1 times [2020-10-13 08:14:29,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:29,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087443243] [2020-10-13 08:14:29,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:30,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:30,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:31,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:31,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 08:14:31,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:14:31,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1051 [2020-10-13 08:14:31,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:31,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:31,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 08:14:31,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 08:14:31,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:31,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:14:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:31,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:31,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:31,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:14:31,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:31,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:14:31,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:31,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:31,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:31,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:31,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:31,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:14:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:31,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:31,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:31,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:14:31,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:31,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 08:14:31,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:31,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:31,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:31,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:14:31,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:31,354 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:14:31,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087443243] [2020-10-13 08:14:31,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:14:31,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:14:31,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559108348] [2020-10-13 08:14:31,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:14:31,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:14:31,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:14:31,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:14:31,357 INFO L87 Difference]: Start difference. First operand 1553 states and 2333 transitions. Second operand 5 states. [2020-10-13 08:14:39,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:14:39,886 INFO L93 Difference]: Finished difference Result 4672 states and 7091 transitions. [2020-10-13 08:14:39,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:14:39,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-13 08:14:39,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:14:39,905 INFO L225 Difference]: With dead ends: 4672 [2020-10-13 08:14:39,905 INFO L226 Difference]: Without dead ends: 3125 [2020-10-13 08:14:39,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 08:14:39,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-13 08:14:39,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3109. [2020-10-13 08:14:39,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3109 states. [2020-10-13 08:14:39,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 4303 transitions. [2020-10-13 08:14:39,985 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 4303 transitions. Word has length 129 [2020-10-13 08:14:39,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:14:39,986 INFO L479 AbstractCegarLoop]: Abstraction has 3109 states and 4303 transitions. [2020-10-13 08:14:39,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:14:39,987 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 4303 transitions. [2020-10-13 08:14:39,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 08:14:39,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:39,989 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:14:39,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:14:39,989 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:39,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:39,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1270754337, now seen corresponding path program 1 times [2020-10-13 08:14:39,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:39,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308701161] [2020-10-13 08:14:39,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:40,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:40,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:40,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:41,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:41,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 08:14:41,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:14:41,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1054 [2020-10-13 08:14:41,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:41,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:41,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 08:14:41,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 08:14:41,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:41,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:14:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:41,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:41,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:41,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:14:41,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:41,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:14:41,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:41,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:41,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:41,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:41,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:41,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:14:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:41,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:41,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:41,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 08:14:41,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:41,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 08:14:41,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:41,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:41,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:41,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 08:14:41,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:41,341 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:14:41,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308701161] [2020-10-13 08:14:41,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:14:41,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:14:41,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344995315] [2020-10-13 08:14:41,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:14:41,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:14:41,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:14:41,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:14:41,346 INFO L87 Difference]: Start difference. First operand 3109 states and 4303 transitions. Second operand 6 states. [2020-10-13 08:14:53,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:14:53,729 INFO L93 Difference]: Finished difference Result 12476 states and 17784 transitions. [2020-10-13 08:14:53,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:14:53,730 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2020-10-13 08:14:53,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:14:53,774 INFO L225 Difference]: With dead ends: 12476 [2020-10-13 08:14:53,775 INFO L226 Difference]: Without dead ends: 9373 [2020-10-13 08:14:53,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:14:53,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9373 states. [2020-10-13 08:14:54,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9373 to 9356. [2020-10-13 08:14:54,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9356 states. [2020-10-13 08:14:54,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9356 states to 9356 states and 12892 transitions. [2020-10-13 08:14:54,048 INFO L78 Accepts]: Start accepts. Automaton has 9356 states and 12892 transitions. Word has length 142 [2020-10-13 08:14:54,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:14:54,049 INFO L479 AbstractCegarLoop]: Abstraction has 9356 states and 12892 transitions. [2020-10-13 08:14:54,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:14:54,049 INFO L276 IsEmpty]: Start isEmpty. Operand 9356 states and 12892 transitions. [2020-10-13 08:14:54,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-13 08:14:54,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:54,052 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:14:54,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:14:54,052 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:54,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:54,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1849303302, now seen corresponding path program 1 times [2020-10-13 08:14:54,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:54,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131023151] [2020-10-13 08:14:54,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:54,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:54,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:54,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:54,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 08:14:54,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:14:54,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 788 [2020-10-13 08:14:54,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:54,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:54,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 08:14:54,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 08:14:54,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:54,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:14:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:54,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:54,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:54,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:14:54,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:54,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:14:54,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:54,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:54,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:54,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:54,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:54,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:14:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:55,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:55,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:55,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 08:14:55,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:55,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 08:14:55,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 08:14:55,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:55,124 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:14:55,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131023151] [2020-10-13 08:14:55,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:14:55,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:14:55,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710200606] [2020-10-13 08:14:55,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:14:55,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:14:55,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:14:55,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:14:55,126 INFO L87 Difference]: Start difference. First operand 9356 states and 12892 transitions. Second operand 5 states. [2020-10-13 08:15:04,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:15:04,946 INFO L93 Difference]: Finished difference Result 27259 states and 38788 transitions. [2020-10-13 08:15:04,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:15:04,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-13 08:15:04,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:15:05,027 INFO L225 Difference]: With dead ends: 27259 [2020-10-13 08:15:05,027 INFO L226 Difference]: Without dead ends: 17909 [2020-10-13 08:15:05,054 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 08:15:05,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17909 states. [2020-10-13 08:15:05,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17909 to 17893. [2020-10-13 08:15:05,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17893 states. [2020-10-13 08:15:06,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17893 states to 17893 states and 24015 transitions. [2020-10-13 08:15:06,406 INFO L78 Accepts]: Start accepts. Automaton has 17893 states and 24015 transitions. Word has length 143 [2020-10-13 08:15:06,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:15:06,407 INFO L479 AbstractCegarLoop]: Abstraction has 17893 states and 24015 transitions. [2020-10-13 08:15:06,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:15:06,407 INFO L276 IsEmpty]: Start isEmpty. Operand 17893 states and 24015 transitions. [2020-10-13 08:15:06,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-13 08:15:06,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:15:06,418 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:15:06,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:15:06,418 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:15:06,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:15:06,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1565178474, now seen corresponding path program 1 times [2020-10-13 08:15:06,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:15:06,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094032105] [2020-10-13 08:15:06,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:15:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:06,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:06,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:06,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:07,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:09,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:11,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:11,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-13 08:15:11,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:15:11,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 08:15:11,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:11,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:15:11,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-13 08:15:11,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 08:15:11,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:11,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:15:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:11,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:11,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:11,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:15:11,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:11,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:15:11,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:11,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:11,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:11,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:11,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:11,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:15:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:11,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:11,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:11,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 08:15:11,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:11,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:15:11,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:11,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:11,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:11,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:11,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:15:11,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 08:15:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:11,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:11,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:11,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 08:15:11,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:11,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-13 08:15:11,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:11,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:15:11,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:11,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 08:15:11,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:11,995 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-13 08:15:11,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094032105] [2020-10-13 08:15:11,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:15:11,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:15:11,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944775448] [2020-10-13 08:15:11,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:15:11,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:15:11,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:15:11,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:15:11,999 INFO L87 Difference]: Start difference. First operand 17893 states and 24015 transitions. Second operand 5 states. [2020-10-13 08:15:18,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:15:18,409 INFO L93 Difference]: Finished difference Result 35807 states and 48177 transitions. [2020-10-13 08:15:18,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:15:18,411 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 261 [2020-10-13 08:15:18,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:15:18,497 INFO L225 Difference]: With dead ends: 35807 [2020-10-13 08:15:18,498 INFO L226 Difference]: Without dead ends: 17909 [2020-10-13 08:15:18,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:15:18,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17909 states. [2020-10-13 08:15:18,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17909 to 17893. [2020-10-13 08:15:18,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17893 states. [2020-10-13 08:15:19,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17893 states to 17893 states and 24011 transitions. [2020-10-13 08:15:19,175 INFO L78 Accepts]: Start accepts. Automaton has 17893 states and 24011 transitions. Word has length 261 [2020-10-13 08:15:19,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:15:19,176 INFO L479 AbstractCegarLoop]: Abstraction has 17893 states and 24011 transitions. [2020-10-13 08:15:19,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:15:19,176 INFO L276 IsEmpty]: Start isEmpty. Operand 17893 states and 24011 transitions. [2020-10-13 08:15:19,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-13 08:15:19,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:15:19,193 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:15:19,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:15:19,193 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:15:19,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:15:19,194 INFO L82 PathProgramCache]: Analyzing trace with hash -2002498949, now seen corresponding path program 1 times [2020-10-13 08:15:19,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:15:19,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005320127] [2020-10-13 08:15:19,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:15:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:19,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:19,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:20,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:21,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:21,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:21,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-13 08:15:21,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:15:21,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2503 [2020-10-13 08:15:21,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:21,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:15:21,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 225 [2020-10-13 08:15:21,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 08:15:21,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:21,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:15:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:21,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:21,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:21,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:15:21,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:21,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:15:21,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:21,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:21,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:21,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:21,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:21,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:15:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:22,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:22,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:22,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 08:15:22,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:22,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-13 08:15:22,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:22,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:15:22,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:22,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-13 08:15:22,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:15:22,417 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:15:22,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005320127] [2020-10-13 08:15:22,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:15:22,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:15:22,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381511033] [2020-10-13 08:15:22,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:15:22,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:15:22,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:15:22,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:15:22,420 INFO L87 Difference]: Start difference. First operand 17893 states and 24011 transitions. Second operand 5 states. [2020-10-13 08:15:29,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:15:29,166 INFO L93 Difference]: Finished difference Result 35812 states and 48184 transitions. [2020-10-13 08:15:29,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:15:29,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 268 [2020-10-13 08:15:29,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:15:29,246 INFO L225 Difference]: With dead ends: 35812 [2020-10-13 08:15:29,246 INFO L226 Difference]: Without dead ends: 17909 [2020-10-13 08:15:29,294 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 08:15:29,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17909 states. [2020-10-13 08:15:29,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17909 to 17893. [2020-10-13 08:15:29,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17893 states. [2020-10-13 08:15:29,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17893 states to 17893 states and 23999 transitions. [2020-10-13 08:15:29,693 INFO L78 Accepts]: Start accepts. Automaton has 17893 states and 23999 transitions. Word has length 268 [2020-10-13 08:15:29,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:15:29,694 INFO L479 AbstractCegarLoop]: Abstraction has 17893 states and 23999 transitions. [2020-10-13 08:15:29,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:15:29,694 INFO L276 IsEmpty]: Start isEmpty. Operand 17893 states and 23999 transitions. [2020-10-13 08:15:29,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-13 08:15:29,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:15:29,710 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:15:29,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:15:29,710 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:15:29,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:15:29,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1039838078, now seen corresponding path program 1 times [2020-10-13 08:15:29,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:15:29,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690340774] [2020-10-13 08:15:29,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:15:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:29,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:30,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:30,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-13 08:15:30,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:30,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 920 [2020-10-13 08:15:30,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:30,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:15:30,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:15:30,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-13 08:15:30,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:30,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:15:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:30,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:30,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:30,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:15:30,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:30,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:15:30,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:30,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:15:30,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:30,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:15:30,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:30,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:15:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:30,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:31,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:31,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-13 08:15:31,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:31,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-10-13 08:15:31,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:31,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:15:31,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:15:31,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-13 08:15:31,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:32,116 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:15:32,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690340774] [2020-10-13 08:15:32,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:15:32,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 08:15:32,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247950413] [2020-10-13 08:15:32,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:15:32,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:15:32,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:15:32,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:15:32,120 INFO L87 Difference]: Start difference. First operand 17893 states and 23999 transitions. Second operand 7 states. [2020-10-13 08:15:44,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:15:44,771 INFO L93 Difference]: Finished difference Result 45332 states and 62937 transitions. [2020-10-13 08:15:44,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:15:44,773 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 321 [2020-10-13 08:15:44,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:15:44,895 INFO L225 Difference]: With dead ends: 45332 [2020-10-13 08:15:44,895 INFO L226 Difference]: Without dead ends: 27445 [2020-10-13 08:15:44,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-13 08:15:44,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27445 states. [2020-10-13 08:15:45,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27445 to 27419. [2020-10-13 08:15:45,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27419 states. [2020-10-13 08:15:45,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27419 states to 27419 states and 36707 transitions. [2020-10-13 08:15:45,523 INFO L78 Accepts]: Start accepts. Automaton has 27419 states and 36707 transitions. Word has length 321 [2020-10-13 08:15:45,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:15:45,524 INFO L479 AbstractCegarLoop]: Abstraction has 27419 states and 36707 transitions. [2020-10-13 08:15:45,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:15:45,524 INFO L276 IsEmpty]: Start isEmpty. Operand 27419 states and 36707 transitions. [2020-10-13 08:15:45,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-13 08:15:45,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:15:45,558 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:15:45,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:15:45,559 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:15:45,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:15:45,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1839254007, now seen corresponding path program 1 times [2020-10-13 08:15:45,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:15:45,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575545220] [2020-10-13 08:15:45,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:15:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:45,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:45,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:48,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:49,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:49,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-10-13 08:15:49,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:15:49,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4230 [2020-10-13 08:15:49,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:49,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:15:49,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 369 [2020-10-13 08:15:49,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 08:15:49,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:50,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:15:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:50,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:50,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:50,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:15:50,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:50,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:15:50,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:50,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:50,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:50,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:50,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:50,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:15:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:50,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:50,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:50,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-13 08:15:50,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:50,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-10-13 08:15:50,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:50,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:15:50,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:50,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 354 [2020-10-13 08:15:50,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:15:51,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:15:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:51,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:51,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:51,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 08:15:51,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:51,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 08:15:51,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:51,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:15:51,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:51,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:15:51,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:51,432 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:15:51,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575545220] [2020-10-13 08:15:51,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:15:51,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:15:51,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670206311] [2020-10-13 08:15:51,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:15:51,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:15:51,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:15:51,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:15:51,441 INFO L87 Difference]: Start difference. First operand 27419 states and 36707 transitions. Second operand 5 states. [2020-10-13 08:15:59,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:15:59,188 INFO L93 Difference]: Finished difference Result 54115 states and 72527 transitions. [2020-10-13 08:15:59,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:15:59,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 413 [2020-10-13 08:15:59,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:15:59,280 INFO L225 Difference]: With dead ends: 54115 [2020-10-13 08:15:59,280 INFO L226 Difference]: Without dead ends: 26666 [2020-10-13 08:15:59,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 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 08:15:59,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26666 states. [2020-10-13 08:15:59,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26666 to 26642. [2020-10-13 08:15:59,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26642 states. [2020-10-13 08:15:59,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26642 states to 26642 states and 35509 transitions. [2020-10-13 08:15:59,810 INFO L78 Accepts]: Start accepts. Automaton has 26642 states and 35509 transitions. Word has length 413 [2020-10-13 08:15:59,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:15:59,811 INFO L479 AbstractCegarLoop]: Abstraction has 26642 states and 35509 transitions. [2020-10-13 08:15:59,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:15:59,811 INFO L276 IsEmpty]: Start isEmpty. Operand 26642 states and 35509 transitions. [2020-10-13 08:15:59,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-10-13 08:15:59,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:15:59,840 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:15:59,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:15:59,840 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:15:59,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:15:59,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1276987762, now seen corresponding path program 1 times [2020-10-13 08:15:59,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:15:59,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158945147] [2020-10-13 08:15:59,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:15:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:59,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:00,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:01,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:03,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:03,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 441 [2020-10-13 08:16:03,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:16:03,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3956 [2020-10-13 08:16:03,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:03,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:16:03,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:16:03,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 08:16:03,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:16:03,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:16:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:03,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:03,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:03,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:16:03,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:03,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:16:03,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:03,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:16:03,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:16:03,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:16:04,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:16:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:04,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:04,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:04,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 08:16:04,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:04,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-13 08:16:04,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:04,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:16:04,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:16:04,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-13 08:16:04,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:16:04,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-13 08:16:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:04,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:04,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:04,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-13 08:16:04,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:04,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-13 08:16:04,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:04,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:16:04,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 266 [2020-10-13 08:16:04,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:16:04,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:16:05,258 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 92 proven. 103 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:16:05,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158945147] [2020-10-13 08:16:05,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:16:05,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:16:05,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115367919] [2020-10-13 08:16:05,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:16:05,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:16:05,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:16:05,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:16:05,261 INFO L87 Difference]: Start difference. First operand 26642 states and 35509 transitions. Second operand 7 states. [2020-10-13 08:16:19,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:16:19,257 INFO L93 Difference]: Finished difference Result 53747 states and 73093 transitions. [2020-10-13 08:16:19,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:16:19,264 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 429 [2020-10-13 08:16:19,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:16:19,636 INFO L225 Difference]: With dead ends: 53747 [2020-10-13 08:16:19,637 INFO L226 Difference]: Without dead ends: 27111 [2020-10-13 08:16:19,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:16:19,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27111 states. [2020-10-13 08:16:20,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27111 to 27006. [2020-10-13 08:16:20,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27006 states. [2020-10-13 08:16:20,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27006 states to 27006 states and 35718 transitions. [2020-10-13 08:16:20,133 INFO L78 Accepts]: Start accepts. Automaton has 27006 states and 35718 transitions. Word has length 429 [2020-10-13 08:16:20,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:16:20,134 INFO L479 AbstractCegarLoop]: Abstraction has 27006 states and 35718 transitions. [2020-10-13 08:16:20,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:16:20,134 INFO L276 IsEmpty]: Start isEmpty. Operand 27006 states and 35718 transitions. [2020-10-13 08:16:20,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-10-13 08:16:20,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:16:20,169 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:16:20,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:16:20,170 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:16:20,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:16:20,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1806349130, now seen corresponding path program 1 times [2020-10-13 08:16:20,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:16:20,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983343367] [2020-10-13 08:16:20,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:16:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:20,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:20,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:23,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:24,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:24,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:24,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 459 [2020-10-13 08:16:24,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:16:24,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4758 [2020-10-13 08:16:24,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:24,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:16:24,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:16:24,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-13 08:16:24,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:25,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:16:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:25,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:25,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:25,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:16:25,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:25,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:16:25,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:25,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:16:25,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:25,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:16:25,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:16:25,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:16:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:25,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:25,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:25,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:16:25,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:25,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-13 08:16:25,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:25,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:16:25,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:16:25,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-13 08:16:25,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:16:25,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:16:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:25,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:25,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:25,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-13 08:16:25,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:25,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-13 08:16:25,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:25,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:16:25,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 266 [2020-10-13 08:16:25,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:16:25,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:16:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 92 proven. 121 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:16:26,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983343367] [2020-10-13 08:16:26,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:16:26,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:16:26,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271102266] [2020-10-13 08:16:26,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:16:26,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:16:26,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:16:26,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:16:26,269 INFO L87 Difference]: Start difference. First operand 27006 states and 35718 transitions. Second operand 8 states. [2020-10-13 08:16:45,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:16:45,473 INFO L93 Difference]: Finished difference Result 66185 states and 89308 transitions. [2020-10-13 08:16:45,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 08:16:45,476 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 447 [2020-10-13 08:16:45,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:16:45,600 INFO L225 Difference]: With dead ends: 66185 [2020-10-13 08:16:45,600 INFO L226 Difference]: Without dead ends: 39185 [2020-10-13 08:16:45,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 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 08:16:45,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39185 states. [2020-10-13 08:16:46,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39185 to 37593. [2020-10-13 08:16:46,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37593 states. [2020-10-13 08:16:46,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37593 states to 37593 states and 46915 transitions. [2020-10-13 08:16:46,732 INFO L78 Accepts]: Start accepts. Automaton has 37593 states and 46915 transitions. Word has length 447 [2020-10-13 08:16:46,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:16:46,733 INFO L479 AbstractCegarLoop]: Abstraction has 37593 states and 46915 transitions. [2020-10-13 08:16:46,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:16:46,733 INFO L276 IsEmpty]: Start isEmpty. Operand 37593 states and 46915 transitions. [2020-10-13 08:16:46,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2020-10-13 08:16:46,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:16:46,783 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:16:46,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:16:46,784 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:16:46,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:16:46,785 INFO L82 PathProgramCache]: Analyzing trace with hash -802664857, now seen corresponding path program 1 times [2020-10-13 08:16:46,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:16:46,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128919032] [2020-10-13 08:16:46,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:16:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:46,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:46,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:47,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:51,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:51,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 516 [2020-10-13 08:16:51,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:16:51,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-13 08:16:51,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:51,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:16:51,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 08:16:51,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 08:16:51,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:52,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:16:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:52,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:52,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:52,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:16:52,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:52,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:16:52,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:52,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:16:52,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:52,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:16:52,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:52,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:16:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:52,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:52,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:52,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 08:16:52,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:52,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 08:16:52,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:52,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:16:52,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:52,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:16:52,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:52,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 08:16:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:52,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:52,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:52,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 08:16:52,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:52,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-13 08:16:52,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:52,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:16:52,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:16:52,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 08:16:52,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:16:52,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-13 08:16:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:52,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:52,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:52,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-13 08:16:52,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:52,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-13 08:16:52,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:52,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:16:52,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 266 [2020-10-13 08:16:52,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:16:52,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:52,810 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 217 proven. 77 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-13 08:16:52,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128919032] [2020-10-13 08:16:52,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:16:52,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:16:52,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982613022] [2020-10-13 08:16:52,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:16:52,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:16:52,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:16:52,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:16:52,813 INFO L87 Difference]: Start difference. First operand 37593 states and 46915 transitions. Second operand 7 states. [2020-10-13 08:17:11,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:17:11,753 INFO L93 Difference]: Finished difference Result 77780 states and 102549 transitions. [2020-10-13 08:17:11,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:17:11,755 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 502 [2020-10-13 08:17:11,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:17:11,944 INFO L225 Difference]: With dead ends: 77780 [2020-10-13 08:17:11,944 INFO L226 Difference]: Without dead ends: 40193 [2020-10-13 08:17:12,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:17:12,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40193 states. [2020-10-13 08:17:12,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40193 to 39697. [2020-10-13 08:17:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39697 states. [2020-10-13 08:17:13,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39697 states to 39697 states and 47291 transitions. [2020-10-13 08:17:13,042 INFO L78 Accepts]: Start accepts. Automaton has 39697 states and 47291 transitions. Word has length 502 [2020-10-13 08:17:13,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:17:13,042 INFO L479 AbstractCegarLoop]: Abstraction has 39697 states and 47291 transitions. [2020-10-13 08:17:13,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:17:13,043 INFO L276 IsEmpty]: Start isEmpty. Operand 39697 states and 47291 transitions. [2020-10-13 08:17:13,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2020-10-13 08:17:13,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:17:13,074 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:17:13,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 08:17:13,074 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:17:13,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:17:13,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1152689730, now seen corresponding path program 1 times [2020-10-13 08:17:13,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:17:13,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629920965] [2020-10-13 08:17:13,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:17:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:13,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:13,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:17,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:17,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 529 [2020-10-13 08:17:17,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:17:17,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4176 [2020-10-13 08:17:17,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:17,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:17:17,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:17:17,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-13 08:17:17,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:17,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:17:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:17,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:17,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:17,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:17:17,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:17,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:17:17,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:17,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:17:17,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:17,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:17:17,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:17,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:17:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:17,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:17,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:17,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 08:17:17,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:17,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 08:17:17,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:17,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:17,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:17:17,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-13 08:17:17,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:17,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-13 08:17:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:17,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:17,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:17,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:17:17,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:17,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 08:17:17,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:17,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:17,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-13 08:17:17,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:17,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:17,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-13 08:17:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:17,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:17,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:17,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-13 08:17:17,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:17,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-13 08:17:17,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:17,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:17,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 266 [2020-10-13 08:17:17,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:17,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:18,389 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 138 proven. 184 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-13 08:17:18,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629920965] [2020-10-13 08:17:18,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:17:18,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:17:18,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544723589] [2020-10-13 08:17:18,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:17:18,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:17:18,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:17:18,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:17:18,393 INFO L87 Difference]: Start difference. First operand 39697 states and 47291 transitions. Second operand 7 states.