/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:10:00,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:10:00,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:10:00,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:10:00,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:10:00,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:10:00,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:10:00,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:10:00,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:10:00,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:10:00,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:10:00,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:10:00,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:10:00,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:10:00,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:10:00,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:10:00,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:10:00,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:10:00,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:10:00,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:10:00,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:10:00,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:10:00,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:10:00,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:10:00,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:10:00,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:10:00,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:10:00,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:10:00,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:10:00,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:10:00,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:10:00,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:10:00,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:10:00,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:10:00,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:10:00,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:10:00,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:10:00,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:10:00,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:10:00,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:10:00,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:10:00,218 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 11:10:00,239 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:10:00,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:10:00,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:10:00,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:10:00,240 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:10:00,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:10:00,241 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:10:00,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:10:00,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:10:00,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:10:00,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:10:00,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:10:00,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:10:00,242 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:10:00,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:10:00,243 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:10:00,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:10:00,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:10:00,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:10:00,243 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:10:00,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:10:00,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:10:00,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:10:00,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:10:00,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:10:00,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:10:00,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:10:00,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:10:00,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:10:00,245 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:10:00,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:10:00,558 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:10:00,561 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:10:00,564 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:10:00,565 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:10:00,566 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label52.c [2020-10-12 11:10:00,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8392df5c5/72b962f6c81540d9b971136b85df495e/FLAG7b5620f0e [2020-10-12 11:10:01,166 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:10:01,167 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label52.c [2020-10-12 11:10:01,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8392df5c5/72b962f6c81540d9b971136b85df495e/FLAG7b5620f0e [2020-10-12 11:10:01,489 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8392df5c5/72b962f6c81540d9b971136b85df495e [2020-10-12 11:10:01,498 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:10:01,499 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:10:01,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:10:01,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:10:01,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:10:01,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:10:01" (1/1) ... [2020-10-12 11:10:01,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532b1c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:10:01, skipping insertion in model container [2020-10-12 11:10:01,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:10:01" (1/1) ... [2020-10-12 11:10:01,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:10:01,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:10:02,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:10:02,211 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:10:02,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:10:02,313 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:10:02,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:10:02 WrapperNode [2020-10-12 11:10:02,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:10:02,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:10:02,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:10:02,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:10:02,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:10:02" (1/1) ... [2020-10-12 11:10:02,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:10:02" (1/1) ... [2020-10-12 11:10:02,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:10:02" (1/1) ... [2020-10-12 11:10:02,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:10:02" (1/1) ... [2020-10-12 11:10:02,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:10:02" (1/1) ... [2020-10-12 11:10:02,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:10:02" (1/1) ... [2020-10-12 11:10:02,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:10:02" (1/1) ... [2020-10-12 11:10:02,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:10:02,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:10:02,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:10:02,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:10:02,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:10:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:10:02,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:10:02,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:10:02,490 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:10:02,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:10:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:10:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:10:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:10:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:10:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:10:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:10:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:10:03,649 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:10:03,650 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:10:03,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:10:03 BoogieIcfgContainer [2020-10-12 11:10:03,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:10:03,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:10:03,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:10:03,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:10:03,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:10:01" (1/3) ... [2020-10-12 11:10:03,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac6017a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:10:03, skipping insertion in model container [2020-10-12 11:10:03,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:10:02" (2/3) ... [2020-10-12 11:10:03,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac6017a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:10:03, skipping insertion in model container [2020-10-12 11:10:03,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:10:03" (3/3) ... [2020-10-12 11:10:03,671 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label52.c [2020-10-12 11:10:03,682 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:10:03,692 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:10:03,707 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:10:03,740 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:10:03,741 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:10:03,741 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:10:03,741 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:10:03,741 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:10:03,741 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:10:03,741 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:10:03,742 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:10:03,760 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-10-12 11:10:03,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-12 11:10:03,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:10:03,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:10:03,775 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:10:03,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:10:03,780 INFO L82 PathProgramCache]: Analyzing trace with hash -421627906, now seen corresponding path program 1 times [2020-10-12 11:10:03,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:10:03,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749757271] [2020-10-12 11:10:03,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:10:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:04,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:04,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:05,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:05,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 11:10:05,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:10:05,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1875 [2020-10-12 11:10:05,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:05,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 11:10:05,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:10:05,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 11:10:05,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:10:06,784 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 39 [2020-10-12 11:10:07,002 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 38 [2020-10-12 11:10:07,199 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 37 [2020-10-12 11:10:07,361 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 35 [2020-10-12 11:10:07,526 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 33 [2020-10-12 11:10:07,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:10:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:07,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:07,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:07,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:10:07,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:10:07,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 11:10:07,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:10:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:10:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:10:07,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:10:07,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:10:07,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749757271] [2020-10-12 11:10:07,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:10:07,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 11:10:07,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668415739] [2020-10-12 11:10:07,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 11:10:07,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:10:07,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 11:10:07,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:10:07,865 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 12 states. [2020-10-12 11:10:08,033 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-12 11:10:08,448 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-12 11:10:08,729 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 92 [2020-10-12 11:10:09,028 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 91 [2020-10-12 11:10:09,511 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 90 [2020-10-12 11:10:10,085 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 89 [2020-10-12 11:10:10,458 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 87 [2020-10-12 11:10:11,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:10:11,516 INFO L93 Difference]: Finished difference Result 474 states and 793 transitions. [2020-10-12 11:10:11,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:10:11,518 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 132 [2020-10-12 11:10:11,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:10:11,531 INFO L225 Difference]: With dead ends: 474 [2020-10-12 11:10:11,531 INFO L226 Difference]: Without dead ends: 205 [2020-10-12 11:10:11,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-12 11:10:11,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-12 11:10:11,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2020-10-12 11:10:11,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-12 11:10:11,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 277 transitions. [2020-10-12 11:10:11,597 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 277 transitions. Word has length 132 [2020-10-12 11:10:11,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:10:11,598 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 277 transitions. [2020-10-12 11:10:11,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 11:10:11,599 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 277 transitions. [2020-10-12 11:10:11,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-12 11:10:11,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:10:11,604 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:10:11,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:10:11,604 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:10:11,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:10:11,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1392982695, now seen corresponding path program 1 times [2020-10-12 11:10:11,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:10:11,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173603108] [2020-10-12 11:10:11,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:10:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:11,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:11,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:11,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:13,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:13,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 11:10:13,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:10:13,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1805 [2020-10-12 11:10:13,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:13,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 11:10:13,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 11:10:13,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 11:10:13,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:10:13,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:10:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:13,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:13,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:13,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:10:13,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:10:13,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:10:13,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:13,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:10:13,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:10:13,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:10:13,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:10:13,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:10:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:13,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:13,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:13,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 11:10:13,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:10:13,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:10:13,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:13,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:10:13,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:10:13,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 11:10:13,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:10:14,117 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:10:14,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173603108] [2020-10-12 11:10:14,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:10:14,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 11:10:14,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800389723] [2020-10-12 11:10:14,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 11:10:14,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:10:14,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 11:10:14,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:10:14,124 INFO L87 Difference]: Start difference. First operand 205 states and 277 transitions. Second operand 13 states. [2020-10-12 11:10:14,479 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 11:10:14,952 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-10-12 11:10:15,700 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2020-10-12 11:10:16,031 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 88 [2020-10-12 11:10:16,450 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 87 [2020-10-12 11:10:16,659 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-10-12 11:10:17,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:10:17,281 INFO L93 Difference]: Finished difference Result 433 states and 637 transitions. [2020-10-12 11:10:17,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:10:17,282 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 140 [2020-10-12 11:10:17,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:10:17,286 INFO L225 Difference]: With dead ends: 433 [2020-10-12 11:10:17,287 INFO L226 Difference]: Without dead ends: 294 [2020-10-12 11:10:17,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2020-10-12 11:10:17,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-12 11:10:17,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 276. [2020-10-12 11:10:17,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-10-12 11:10:17,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 355 transitions. [2020-10-12 11:10:17,315 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 355 transitions. Word has length 140 [2020-10-12 11:10:17,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:10:17,316 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 355 transitions. [2020-10-12 11:10:17,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 11:10:17,316 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 355 transitions. [2020-10-12 11:10:17,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-12 11:10:17,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:10:17,320 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:10:17,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:10:17,321 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:10:17,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:10:17,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1231197609, now seen corresponding path program 1 times [2020-10-12 11:10:17,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:10:17,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001459688] [2020-10-12 11:10:17,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:10:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:17,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:17,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:17,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:18,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:18,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-12 11:10:18,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:10:18,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 760 [2020-10-12 11:10:18,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:18,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:10:18,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:10:18,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-12 11:10:18,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:10:18,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:10:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:18,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:18,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:18,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:10:18,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:10:18,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:10:18,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:18,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:10:18,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:10:18,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:10:18,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:10:18,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:10:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:18,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:18,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:18,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:18,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:10:18,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:10:18,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 11:10:18,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:18,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:10:18,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:10:18,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:10:18,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:10:18,338 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 11:10:18,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001459688] [2020-10-12 11:10:18,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:10:18,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:10:18,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018092649] [2020-10-12 11:10:18,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:10:18,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:10:18,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:10:18,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:10:18,341 INFO L87 Difference]: Start difference. First operand 276 states and 355 transitions. Second operand 6 states. [2020-10-12 11:10:19,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:10:19,337 INFO L93 Difference]: Finished difference Result 627 states and 853 transitions. [2020-10-12 11:10:19,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 11:10:19,338 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2020-10-12 11:10:19,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:10:19,343 INFO L225 Difference]: With dead ends: 627 [2020-10-12 11:10:19,343 INFO L226 Difference]: Without dead ends: 417 [2020-10-12 11:10:19,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:10:19,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-10-12 11:10:19,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 415. [2020-10-12 11:10:19,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-10-12 11:10:19,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 548 transitions. [2020-10-12 11:10:19,376 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 548 transitions. Word has length 143 [2020-10-12 11:10:19,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:10:19,377 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 548 transitions. [2020-10-12 11:10:19,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:10:19,377 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 548 transitions. [2020-10-12 11:10:19,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-12 11:10:19,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:10:19,381 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:10:19,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:10:19,382 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:10:19,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:10:19,382 INFO L82 PathProgramCache]: Analyzing trace with hash -260285342, now seen corresponding path program 1 times [2020-10-12 11:10:19,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:10:19,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879441229] [2020-10-12 11:10:19,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:10:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:19,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:19,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:19,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:21,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:23,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:23,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 11:10:23,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:10:23,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4284 [2020-10-12 11:10:23,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:23,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 11:10:23,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-12 11:10:23,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 11:10:23,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:10:24,174 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-10-12 11:10:24,357 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2020-10-12 11:10:24,609 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 50 [2020-10-12 11:10:24,837 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 46 [2020-10-12 11:10:25,030 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 42 [2020-10-12 11:10:25,213 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 38 [2020-10-12 11:10:25,393 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 34 [2020-10-12 11:10:25,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:10:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:25,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:25,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:25,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:10:25,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:10:25,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:10:25,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:10:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:10:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:10:25,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:10:25,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:10:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:25,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:25,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:25,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:10:25,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:10:25,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:10:25,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:25,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:10:25,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:10:25,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:10:25,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:10:25,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:10:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:25,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:25,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:25,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 11:10:25,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:10:25,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 11:10:25,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:25,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:10:25,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:10:25,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 11:10:25,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:10:25,699 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 11:10:25,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879441229] [2020-10-12 11:10:25,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:10:25,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 11:10:25,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621977085] [2020-10-12 11:10:25,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 11:10:25,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:10:25,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 11:10:25,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:10:25,702 INFO L87 Difference]: Start difference. First operand 415 states and 548 transitions. Second operand 13 states. [2020-10-12 11:10:26,100 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-12 11:10:26,284 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-12 11:10:26,695 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 112 [2020-10-12 11:10:27,087 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 109 [2020-10-12 11:10:27,426 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 106 [2020-10-12 11:10:28,123 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 103 [2020-10-12 11:10:28,747 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 98 [2020-10-12 11:10:29,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:10:29,304 INFO L93 Difference]: Finished difference Result 843 states and 1178 transitions. [2020-10-12 11:10:29,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 11:10:29,306 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-10-12 11:10:29,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:10:29,311 INFO L225 Difference]: With dead ends: 843 [2020-10-12 11:10:29,311 INFO L226 Difference]: Without dead ends: 494 [2020-10-12 11:10:29,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2020-10-12 11:10:29,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-10-12 11:10:29,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 490. [2020-10-12 11:10:29,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-10-12 11:10:29,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 632 transitions. [2020-10-12 11:10:29,367 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 632 transitions. Word has length 152 [2020-10-12 11:10:29,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:10:29,367 INFO L479 AbstractCegarLoop]: Abstraction has 490 states and 632 transitions. [2020-10-12 11:10:29,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 11:10:29,368 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 632 transitions. [2020-10-12 11:10:29,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-12 11:10:29,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:10:29,371 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 11:10:29,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:10:29,372 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:10:29,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:10:29,372 INFO L82 PathProgramCache]: Analyzing trace with hash 605069402, now seen corresponding path program 1 times [2020-10-12 11:10:29,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:10:29,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095900776] [2020-10-12 11:10:29,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:10:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:29,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:29,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:29,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:30,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:32,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:32,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:34,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:34,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-12 11:10:34,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 11:10:34,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4698 [2020-10-12 11:10:34,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:34,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 11:10:34,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 11:10:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 11:10:34,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 11:10:34,612 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2020-10-12 11:10:34,752 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2020-10-12 11:10:34,899 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 40 [2020-10-12 11:10:35,042 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 39 [2020-10-12 11:10:35,200 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 37 [2020-10-12 11:10:35,365 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 35 [2020-10-12 11:10:35,500 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 33 [2020-10-12 11:10:35,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:10:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:35,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:35,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:35,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:10:35,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:10:35,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:10:35,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:35,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:10:35,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:10:35,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:10:35,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:10:35,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:10:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:35,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:35,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:35,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:10:35,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:10:35,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:10:35,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:35,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:10:35,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:10:35,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:10:35,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:10:35,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:10:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:35,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:35,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:35,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 11:10:35,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:10:35,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 11:10:35,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:35,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:10:35,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:10:35,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 11:10:35,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:10:35,717 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 11:10:35,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095900776] [2020-10-12 11:10:35,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:10:35,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 11:10:35,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133326250] [2020-10-12 11:10:35,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 11:10:35,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:10:35,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 11:10:35,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:10:35,720 INFO L87 Difference]: Start difference. First operand 490 states and 632 transitions. Second operand 13 states. [2020-10-12 11:10:36,304 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-12 11:10:36,612 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 92 [2020-10-12 11:10:36,896 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 91 [2020-10-12 11:10:37,180 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 90 [2020-10-12 11:10:37,665 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 89 [2020-10-12 11:10:38,172 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 87 [2020-10-12 11:10:38,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:10:38,716 INFO L93 Difference]: Finished difference Result 989 states and 1342 transitions. [2020-10-12 11:10:38,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 11:10:38,719 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 156 [2020-10-12 11:10:38,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:10:38,725 INFO L225 Difference]: With dead ends: 989 [2020-10-12 11:10:38,725 INFO L226 Difference]: Without dead ends: 565 [2020-10-12 11:10:38,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2020-10-12 11:10:38,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-12 11:10:38,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 488. [2020-10-12 11:10:38,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2020-10-12 11:10:38,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 629 transitions. [2020-10-12 11:10:38,755 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 629 transitions. Word has length 156 [2020-10-12 11:10:38,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:10:38,757 INFO L479 AbstractCegarLoop]: Abstraction has 488 states and 629 transitions. [2020-10-12 11:10:38,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 11:10:38,757 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 629 transitions. [2020-10-12 11:10:38,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-12 11:10:38,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:10:38,760 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 11:10:38,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:10:38,761 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:10:38,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:10:38,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1600445358, now seen corresponding path program 1 times [2020-10-12 11:10:38,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:10:38,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503472232] [2020-10-12 11:10:38,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:10:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:38,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:38,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:38,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:39,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:40,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:40,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 11:10:40,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:10:40,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2134 [2020-10-12 11:10:40,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:40,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:10:40,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:10:40,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 11:10:40,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:10:41,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:10:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:41,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:41,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:41,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:10:41,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:10:41,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:10:41,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:41,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:10:41,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:10:41,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:10:41,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:10:41,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:10:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:41,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:41,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:41,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:41,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:10:41,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:10:41,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 11:10:41,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:41,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:10:41,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:10:41,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:10:41,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:10:41,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:10:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:41,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:41,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:41,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:10:41,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:10:41,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 11:10:41,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:10:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:10:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:10:41,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:10:41,254 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:10:41,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503472232] [2020-10-12 11:10:41,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:10:41,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:10:41,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109814735] [2020-10-12 11:10:41,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:10:41,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:10:41,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:10:41,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:10:41,257 INFO L87 Difference]: Start difference. First operand 488 states and 629 transitions. Second operand 8 states. [2020-10-12 11:10:42,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:10:42,767 INFO L93 Difference]: Finished difference Result 1224 states and 1670 transitions. [2020-10-12 11:10:42,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:10:42,768 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 160 [2020-10-12 11:10:42,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:10:42,773 INFO L225 Difference]: With dead ends: 1224 [2020-10-12 11:10:42,774 INFO L226 Difference]: Without dead ends: 802 [2020-10-12 11:10:42,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-12 11:10:42,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2020-10-12 11:10:42,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 782. [2020-10-12 11:10:42,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 782 states. [2020-10-12 11:10:42,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 976 transitions. [2020-10-12 11:10:42,806 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 976 transitions. Word has length 160 [2020-10-12 11:10:42,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:10:42,807 INFO L479 AbstractCegarLoop]: Abstraction has 782 states and 976 transitions. [2020-10-12 11:10:42,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:10:42,807 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 976 transitions. [2020-10-12 11:10:42,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-12 11:10:42,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:10:42,810 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:10:42,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:10:42,811 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:10:42,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:10:42,811 INFO L82 PathProgramCache]: Analyzing trace with hash 2130886222, now seen corresponding path program 1 times [2020-10-12 11:10:42,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:10:42,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036393570] [2020-10-12 11:10:42,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:10:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:42,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:42,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:42,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:45,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:46,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:47,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:47,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 11:10:47,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:10:47,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4649 [2020-10-12 11:10:47,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:47,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 11:10:47,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-12 11:10:47,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 11:10:47,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:10:47,924 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-10-12 11:10:48,129 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2020-10-12 11:10:48,367 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 49 [2020-10-12 11:10:48,596 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 45 [2020-10-12 11:10:48,838 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 42 [2020-10-12 11:10:49,059 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 39 [2020-10-12 11:10:49,250 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 33 [2020-10-12 11:10:49,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:10:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:49,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:49,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:49,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:10:49,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:10:49,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:10:49,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:49,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:10:49,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:10:49,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:10:49,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:10:49,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:10:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:49,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:49,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:49,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:10:49,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:10:49,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:10:49,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:49,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:10:49,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:10:49,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:10:49,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:10:49,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:10:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:49,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:49,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:49,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:10:49,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:10:49,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 11:10:49,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:49,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:10:49,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:10:49,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 11:10:49,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:10:49,619 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 11:10:49,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036393570] [2020-10-12 11:10:49,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:10:49,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 11:10:49,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244450060] [2020-10-12 11:10:49,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 11:10:49,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:10:49,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 11:10:49,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:10:49,622 INFO L87 Difference]: Start difference. First operand 782 states and 976 transitions. Second operand 13 states. [2020-10-12 11:10:50,018 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-12 11:10:50,203 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-12 11:10:50,377 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2020-10-12 11:10:50,949 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 114 [2020-10-12 11:10:51,494 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 111 [2020-10-12 11:10:51,832 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 108 [2020-10-12 11:10:52,218 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 105 [2020-10-12 11:10:52,788 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 100 [2020-10-12 11:10:53,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:10:53,319 INFO L93 Difference]: Finished difference Result 1568 states and 1979 transitions. [2020-10-12 11:10:53,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 11:10:53,326 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 162 [2020-10-12 11:10:53,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:10:53,330 INFO L225 Difference]: With dead ends: 1568 [2020-10-12 11:10:53,330 INFO L226 Difference]: Without dead ends: 852 [2020-10-12 11:10:53,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2020-10-12 11:10:53,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-10-12 11:10:53,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 844. [2020-10-12 11:10:53,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2020-10-12 11:10:53,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1053 transitions. [2020-10-12 11:10:53,362 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1053 transitions. Word has length 162 [2020-10-12 11:10:53,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:10:53,362 INFO L479 AbstractCegarLoop]: Abstraction has 844 states and 1053 transitions. [2020-10-12 11:10:53,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 11:10:53,363 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1053 transitions. [2020-10-12 11:10:53,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-12 11:10:53,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:10:53,367 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:10:53,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:10:53,367 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:10:53,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:10:53,368 INFO L82 PathProgramCache]: Analyzing trace with hash -169626574, now seen corresponding path program 1 times [2020-10-12 11:10:53,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:10:53,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226649300] [2020-10-12 11:10:53,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:10:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:53,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:53,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:53,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:55,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:55,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:56,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:56,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-12 11:10:56,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:10:56,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3303 [2020-10-12 11:10:56,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 11:10:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-12 11:10:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 11:10:56,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:10:56,921 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-10-12 11:10:57,134 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2020-10-12 11:10:57,261 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-12 11:10:57,386 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2020-10-12 11:10:57,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:10:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:57,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:57,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:57,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:10:57,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:10:57,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:10:57,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:57,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:10:57,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:10:57,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:10:57,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:10:57,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:10:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:57,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:57,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:57,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:10:57,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:10:57,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:10:57,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:57,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:10:57,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:10:57,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:10:57,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:10:57,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:10:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:10:57,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:10:57,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:10:57,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 11:10:57,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:10:57,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:10:57,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:10:57,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:10:57,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:10:57,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 11:10:57,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:10:57,937 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 11:10:57,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226649300] [2020-10-12 11:10:57,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:10:57,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 11:10:57,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814111616] [2020-10-12 11:10:57,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 11:10:57,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:10:57,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 11:10:57,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-12 11:10:57,939 INFO L87 Difference]: Start difference. First operand 844 states and 1053 transitions. Second operand 14 states. [2020-10-12 11:10:58,341 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-10-12 11:10:58,516 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-10-12 11:10:58,754 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2020-10-12 11:10:59,098 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 115 [2020-10-12 11:10:59,543 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 112 [2020-10-12 11:11:00,049 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 109 [2020-10-12 11:11:00,355 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 106 [2020-10-12 11:11:00,821 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2020-10-12 11:11:01,305 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 98 [2020-10-12 11:11:01,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:11:01,661 INFO L93 Difference]: Finished difference Result 1686 states and 2173 transitions. [2020-10-12 11:11:01,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:11:01,662 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 176 [2020-10-12 11:11:01,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:11:01,667 INFO L225 Difference]: With dead ends: 1686 [2020-10-12 11:11:01,667 INFO L226 Difference]: Without dead ends: 908 [2020-10-12 11:11:01,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2020-10-12 11:11:01,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-10-12 11:11:01,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 904. [2020-10-12 11:11:01,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-10-12 11:11:01,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1121 transitions. [2020-10-12 11:11:01,699 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1121 transitions. Word has length 176 [2020-10-12 11:11:01,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:11:01,700 INFO L479 AbstractCegarLoop]: Abstraction has 904 states and 1121 transitions. [2020-10-12 11:11:01,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 11:11:01,700 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1121 transitions. [2020-10-12 11:11:01,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-12 11:11:01,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:11:01,704 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:11:01,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:11:01,704 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:11:01,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:11:01,704 INFO L82 PathProgramCache]: Analyzing trace with hash 454007162, now seen corresponding path program 1 times [2020-10-12 11:11:01,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:11:01,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381188511] [2020-10-12 11:11:01,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:11:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:01,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:01,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:01,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:04,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:05,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:05,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:05,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-12 11:11:05,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:11:05,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4098 [2020-10-12 11:11:05,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:05,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 11:11:05,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-12 11:11:05,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 11:11:05,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:06,215 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-10-12 11:11:06,433 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2020-10-12 11:11:06,694 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 51 [2020-10-12 11:11:06,916 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 47 [2020-10-12 11:11:07,159 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 44 [2020-10-12 11:11:07,374 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 40 [2020-10-12 11:11:07,561 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 39 [2020-10-12 11:11:07,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:11:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:07,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:07,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:07,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:11:07,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:07,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:11:07,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:07,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:11:07,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:11:07,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:11:07,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:07,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:11:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:07,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:07,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:07,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:11:07,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:07,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:11:07,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:07,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:11:07,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:11:07,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:11:07,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:07,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:11:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:07,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:07,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:07,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 11:11:07,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:07,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 11:11:07,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:07,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:11:07,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:11:07,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 11:11:07,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:07,838 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 11:11:07,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381188511] [2020-10-12 11:11:07,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:11:07,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 11:11:07,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073250558] [2020-10-12 11:11:07,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 11:11:07,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:11:07,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 11:11:07,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:11:07,841 INFO L87 Difference]: Start difference. First operand 904 states and 1121 transitions. Second operand 13 states. [2020-10-12 11:11:08,297 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-10-12 11:11:08,518 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-12 11:11:08,725 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-12 11:11:09,282 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 115 [2020-10-12 11:11:09,857 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 112 [2020-10-12 11:11:10,113 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2020-10-12 11:11:10,460 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 109 [2020-10-12 11:11:10,866 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 106 [2020-10-12 11:11:11,573 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 101 [2020-10-12 11:11:11,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:11:11,940 INFO L93 Difference]: Finished difference Result 1806 states and 2258 transitions. [2020-10-12 11:11:11,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 11:11:11,942 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 179 [2020-10-12 11:11:11,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:11:11,948 INFO L225 Difference]: With dead ends: 1806 [2020-10-12 11:11:11,948 INFO L226 Difference]: Without dead ends: 968 [2020-10-12 11:11:11,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2020-10-12 11:11:11,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-10-12 11:11:11,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 942. [2020-10-12 11:11:11,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 942 states. [2020-10-12 11:11:11,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1167 transitions. [2020-10-12 11:11:11,984 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1167 transitions. Word has length 179 [2020-10-12 11:11:11,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:11:11,984 INFO L479 AbstractCegarLoop]: Abstraction has 942 states and 1167 transitions. [2020-10-12 11:11:11,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 11:11:11,985 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1167 transitions. [2020-10-12 11:11:11,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-12 11:11:11,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:11:11,989 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:11:11,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 11:11:11,990 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:11:11,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:11:11,990 INFO L82 PathProgramCache]: Analyzing trace with hash 394673504, now seen corresponding path program 1 times [2020-10-12 11:11:11,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:11:11,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084873625] [2020-10-12 11:11:11,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:11:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:12,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:12,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:12,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:12,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:12,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:14,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:14,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-12 11:11:14,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:11:14,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2452 [2020-10-12 11:11:14,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:11:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 11:11:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 11:11:14,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:15,050 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-10-12 11:11:15,272 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2020-10-12 11:11:15,434 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2020-10-12 11:11:15,560 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2020-10-12 11:11:15,724 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 44 [2020-10-12 11:11:15,943 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 47 [2020-10-12 11:11:16,133 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2020-10-12 11:11:16,355 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 41 [2020-10-12 11:11:16,546 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 36 [2020-10-12 11:11:16,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:11:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:16,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:16,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:16,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:11:16,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:16,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:11:16,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:16,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:11:16,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:11:16,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:11:16,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:17,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:11:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:17,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:17,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:17,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 11:11:17,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:17,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:11:17,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:17,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:11:17,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:11:17,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 11:11:17,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:17,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-12 11:11:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:17,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:17,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:17,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 11:11:17,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:17,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 11:11:17,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:17,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:11:17,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:11:17,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 11:11:17,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:17,328 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 47 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:11:17,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084873625] [2020-10-12 11:11:17,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:11:17,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 11:11:17,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311436063] [2020-10-12 11:11:17,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 11:11:17,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:11:17,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 11:11:17,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-10-12 11:11:17,331 INFO L87 Difference]: Start difference. First operand 942 states and 1167 transitions. Second operand 20 states. [2020-10-12 11:11:17,755 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-12 11:11:18,135 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2020-10-12 11:11:18,521 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 99 [2020-10-12 11:11:18,868 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 99 [2020-10-12 11:11:19,281 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 101 [2020-10-12 11:11:19,643 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 104 [2020-10-12 11:11:20,004 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-10-12 11:11:20,314 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 102 [2020-10-12 11:11:20,757 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 97 [2020-10-12 11:11:21,026 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 94 [2020-10-12 11:11:21,412 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 91 [2020-10-12 11:11:21,679 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 85 [2020-10-12 11:11:21,950 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 86 [2020-10-12 11:11:22,314 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2020-10-12 11:11:22,525 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-10-12 11:11:23,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:11:23,692 INFO L93 Difference]: Finished difference Result 1994 states and 2594 transitions. [2020-10-12 11:11:23,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 11:11:23,693 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 190 [2020-10-12 11:11:23,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:11:23,699 INFO L225 Difference]: With dead ends: 1994 [2020-10-12 11:11:23,699 INFO L226 Difference]: Without dead ends: 1118 [2020-10-12 11:11:23,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=557, Invalid=1335, Unknown=0, NotChecked=0, Total=1892 [2020-10-12 11:11:23,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2020-10-12 11:11:23,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 1087. [2020-10-12 11:11:23,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1087 states. [2020-10-12 11:11:23,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1333 transitions. [2020-10-12 11:11:23,748 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1333 transitions. Word has length 190 [2020-10-12 11:11:23,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:11:23,748 INFO L479 AbstractCegarLoop]: Abstraction has 1087 states and 1333 transitions. [2020-10-12 11:11:23,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 11:11:23,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1333 transitions. [2020-10-12 11:11:23,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-12 11:11:23,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:11:23,753 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:11:23,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 11:11:23,754 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:11:23,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:11:23,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1999363217, now seen corresponding path program 1 times [2020-10-12 11:11:23,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:11:23,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120115001] [2020-10-12 11:11:23,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:11:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:23,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:23,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:23,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:25,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:25,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-12 11:11:25,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:11:25,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1424 [2020-10-12 11:11:25,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:25,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 11:11:25,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-12 11:11:25,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 11:11:25,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:25,825 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-10-12 11:11:26,124 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2020-10-12 11:11:26,376 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 51 [2020-10-12 11:11:26,620 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 47 [2020-10-12 11:11:26,846 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 43 [2020-10-12 11:11:27,054 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 40 [2020-10-12 11:11:27,253 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 35 [2020-10-12 11:11:27,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:11:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:27,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:27,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:27,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:11:27,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:27,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:11:27,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:27,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:11:27,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:11:27,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:11:27,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:27,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:11:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:27,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:27,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:27,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 11:11:27,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:27,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 11:11:27,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:27,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:11:27,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:11:27,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 11:11:27,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:27,817 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:11:27,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120115001] [2020-10-12 11:11:27,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:11:27,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 11:11:27,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446496948] [2020-10-12 11:11:27,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 11:11:27,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:11:27,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 11:11:27,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:11:27,820 INFO L87 Difference]: Start difference. First operand 1087 states and 1333 transitions. Second operand 13 states. [2020-10-12 11:11:28,552 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-10-12 11:11:28,801 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-12 11:11:28,999 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-12 11:11:29,672 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 115 [2020-10-12 11:11:30,386 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 112 [2020-10-12 11:11:30,799 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 109 [2020-10-12 11:11:31,207 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 106 [2020-10-12 11:11:31,686 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 101 [2020-10-12 11:11:31,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:11:31,919 INFO L93 Difference]: Finished difference Result 2179 states and 2692 transitions. [2020-10-12 11:11:31,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:11:31,920 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 195 [2020-10-12 11:11:31,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:11:31,926 INFO L225 Difference]: With dead ends: 2179 [2020-10-12 11:11:31,926 INFO L226 Difference]: Without dead ends: 1158 [2020-10-12 11:11:31,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2020-10-12 11:11:31,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2020-10-12 11:11:31,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1156. [2020-10-12 11:11:31,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1156 states. [2020-10-12 11:11:31,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1409 transitions. [2020-10-12 11:11:31,963 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1409 transitions. Word has length 195 [2020-10-12 11:11:31,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:11:31,964 INFO L479 AbstractCegarLoop]: Abstraction has 1156 states and 1409 transitions. [2020-10-12 11:11:31,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 11:11:31,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1409 transitions. [2020-10-12 11:11:31,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-12 11:11:31,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:11:31,968 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:11:31,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 11:11:31,968 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:11:31,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:11:31,969 INFO L82 PathProgramCache]: Analyzing trace with hash 891589731, now seen corresponding path program 1 times [2020-10-12 11:11:31,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:11:31,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274111827] [2020-10-12 11:11:31,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:11:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:31,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:32,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:32,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:32,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:33,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:35,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:36,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:36,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-12 11:11:36,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 11:11:36,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4352 [2020-10-12 11:11:36,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:36,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:11:36,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:11:36,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 11:11:36,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:36,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:11:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:36,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:36,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:36,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:11:36,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:36,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:11:36,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:36,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:11:36,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:11:36,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:11:36,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:36,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:11:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:36,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:36,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:36,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:36,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:11:36,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:11:36,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 11:11:36,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:36,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:11:36,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:11:36,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:11:36,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:36,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:11:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:36,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:36,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:36,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 11:11:36,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:36,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 11:11:36,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:36,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:11:36,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:11:36,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 11:11:36,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:36,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 11:11:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:36,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:36,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:36,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:11:36,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:36,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:11:36,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:36,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:11:36,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 11:11:36,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:11:36,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:36,634 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 67 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 11:11:36,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274111827] [2020-10-12 11:11:36,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:11:36,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:11:36,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729320145] [2020-10-12 11:11:36,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:11:36,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:11:36,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:11:36,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:11:36,637 INFO L87 Difference]: Start difference. First operand 1156 states and 1409 transitions. Second operand 8 states. [2020-10-12 11:11:38,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:11:38,215 INFO L93 Difference]: Finished difference Result 2405 states and 2989 transitions. [2020-10-12 11:11:38,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:11:38,218 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2020-10-12 11:11:38,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:11:38,224 INFO L225 Difference]: With dead ends: 2405 [2020-10-12 11:11:38,225 INFO L226 Difference]: Without dead ends: 1315 [2020-10-12 11:11:38,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-12 11:11:38,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2020-10-12 11:11:38,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1305. [2020-10-12 11:11:38,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2020-10-12 11:11:38,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1589 transitions. [2020-10-12 11:11:38,264 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1589 transitions. Word has length 199 [2020-10-12 11:11:38,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:11:38,264 INFO L479 AbstractCegarLoop]: Abstraction has 1305 states and 1589 transitions. [2020-10-12 11:11:38,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:11:38,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1589 transitions. [2020-10-12 11:11:38,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-12 11:11:38,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:11:38,269 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 11:11:38,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 11:11:38,269 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:11:38,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:11:38,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1395131495, now seen corresponding path program 1 times [2020-10-12 11:11:38,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:11:38,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665154823] [2020-10-12 11:11:38,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:11:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:38,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:38,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:38,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:39,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:39,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-12 11:11:39,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:11:39,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 808 [2020-10-12 11:11:39,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:39,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:11:39,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-12 11:11:39,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:11:39,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:39,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:11:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:39,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:39,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:39,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:11:39,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:39,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:11:39,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:39,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:11:39,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:11:39,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:11:39,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:39,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:11:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:39,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:39,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:39,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 11:11:39,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:39,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:11:39,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:39,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:11:39,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:11:39,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:11:39,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:39,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-12 11:11:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:39,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:39,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:39,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 11:11:39,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:39,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 11:11:39,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:39,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:11:39,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:11:39,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 11:11:39,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:39,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-12 11:11:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:39,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:39,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:39,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:11:39,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:39,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 11:11:39,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:11:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:11:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:11:39,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:39,341 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-12 11:11:39,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665154823] [2020-10-12 11:11:39,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:11:39,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:11:39,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331706229] [2020-10-12 11:11:39,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:11:39,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:11:39,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:11:39,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:11:39,343 INFO L87 Difference]: Start difference. First operand 1305 states and 1589 transitions. Second operand 7 states. [2020-10-12 11:11:41,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:11:41,048 INFO L93 Difference]: Finished difference Result 2832 states and 3564 transitions. [2020-10-12 11:11:41,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:11:41,049 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2020-10-12 11:11:41,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:11:41,057 INFO L225 Difference]: With dead ends: 2832 [2020-10-12 11:11:41,057 INFO L226 Difference]: Without dead ends: 1593 [2020-10-12 11:11:41,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:11:41,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2020-10-12 11:11:41,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1585. [2020-10-12 11:11:41,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-10-12 11:11:41,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 1910 transitions. [2020-10-12 11:11:41,105 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 1910 transitions. Word has length 229 [2020-10-12 11:11:41,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:11:41,106 INFO L479 AbstractCegarLoop]: Abstraction has 1585 states and 1910 transitions. [2020-10-12 11:11:41,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:11:41,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 1910 transitions. [2020-10-12 11:11:41,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-12 11:11:41,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:11:41,111 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 11:11:41,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 11:11:41,111 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:11:41,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:11:41,112 INFO L82 PathProgramCache]: Analyzing trace with hash -209136287, now seen corresponding path program 1 times [2020-10-12 11:11:41,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:11:41,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49921368] [2020-10-12 11:11:41,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:11:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:41,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:41,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:41,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:41,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:42,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:44,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:44,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-12 11:11:44,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:11:44,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2950 [2020-10-12 11:11:44,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:44,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 11:11:44,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-12 11:11:44,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 11:11:44,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:44,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:11:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:44,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:44,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:44,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:11:44,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:44,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:11:44,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:44,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:11:44,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:11:44,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:11:44,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:44,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:11:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:44,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:44,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:44,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 11:11:44,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:44,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 11:11:44,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:44,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:11:44,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:11:44,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:11:44,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:44,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-12 11:11:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:44,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:44,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:44,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 11:11:44,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:44,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:11:44,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:11:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:11:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:11:44,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:44,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 11:11:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:45,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:45,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:45,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 11:11:45,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:45,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 11:11:45,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:45,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:11:45,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:11:45,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 11:11:45,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:45,151 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 96 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-12 11:11:45,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49921368] [2020-10-12 11:11:45,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:11:45,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 11:11:45,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794755820] [2020-10-12 11:11:45,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 11:11:45,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:11:45,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 11:11:45,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:11:45,153 INFO L87 Difference]: Start difference. First operand 1585 states and 1910 transitions. Second operand 13 states. [2020-10-12 11:11:45,643 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 11:11:46,055 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-10-12 11:11:46,436 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-12 11:11:46,698 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-10-12 11:11:46,936 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-12 11:11:47,322 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-12 11:11:47,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:11:47,840 INFO L93 Difference]: Finished difference Result 3188 states and 3860 transitions. [2020-10-12 11:11:47,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 11:11:47,845 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 234 [2020-10-12 11:11:47,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:11:47,851 INFO L225 Difference]: With dead ends: 3188 [2020-10-12 11:11:47,852 INFO L226 Difference]: Without dead ends: 1669 [2020-10-12 11:11:47,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-12 11:11:47,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2020-10-12 11:11:47,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1585. [2020-10-12 11:11:47,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-10-12 11:11:47,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 1910 transitions. [2020-10-12 11:11:47,900 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 1910 transitions. Word has length 234 [2020-10-12 11:11:47,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:11:47,900 INFO L479 AbstractCegarLoop]: Abstraction has 1585 states and 1910 transitions. [2020-10-12 11:11:47,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 11:11:47,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 1910 transitions. [2020-10-12 11:11:47,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-12 11:11:47,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:11:47,907 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:11:47,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 11:11:47,907 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:11:47,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:11:47,908 INFO L82 PathProgramCache]: Analyzing trace with hash 112762352, now seen corresponding path program 1 times [2020-10-12 11:11:47,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:11:47,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444717308] [2020-10-12 11:11:47,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:11:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:47,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:48,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:48,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:48,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:48,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-12 11:11:48,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:11:48,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 754 [2020-10-12 11:11:48,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:48,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:11:48,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-12 11:11:48,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 11:11:48,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:48,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:11:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:48,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:48,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:48,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:11:48,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:48,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:11:48,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:48,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:11:48,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:11:48,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:11:48,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:48,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:11:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:48,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:48,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:48,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 11:11:48,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:48,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 11:11:48,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:48,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:11:48,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:11:48,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:11:48,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:48,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-12 11:11:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:48,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:48,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:48,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 11:11:48,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:48,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:11:48,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:48,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:11:48,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:11:48,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:11:48,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:48,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 11:11:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:48,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:48,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:48,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 11:11:48,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:48,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:11:48,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:48,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:11:48,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:11:48,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:11:48,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:48,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-12 11:11:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:48,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:48,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:48,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:11:48,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:48,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 11:11:48,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:48,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:11:48,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:11:48,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:11:48,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:49,050 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 100 proven. 4 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-12 11:11:49,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444717308] [2020-10-12 11:11:49,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:11:49,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:11:49,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67534378] [2020-10-12 11:11:49,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:11:49,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:11:49,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:11:49,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:11:49,052 INFO L87 Difference]: Start difference. First operand 1585 states and 1910 transitions. Second operand 5 states. [2020-10-12 11:11:50,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:11:50,212 INFO L93 Difference]: Finished difference Result 3189 states and 3863 transitions. [2020-10-12 11:11:50,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:11:50,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 239 [2020-10-12 11:11:50,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:11:50,219 INFO L225 Difference]: With dead ends: 3189 [2020-10-12 11:11:50,219 INFO L226 Difference]: Without dead ends: 1589 [2020-10-12 11:11:50,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:11:50,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2020-10-12 11:11:50,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1585. [2020-10-12 11:11:50,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-10-12 11:11:50,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 1906 transitions. [2020-10-12 11:11:50,269 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 1906 transitions. Word has length 239 [2020-10-12 11:11:50,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:11:50,270 INFO L479 AbstractCegarLoop]: Abstraction has 1585 states and 1906 transitions. [2020-10-12 11:11:50,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:11:50,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 1906 transitions. [2020-10-12 11:11:50,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-12 11:11:50,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:11:50,277 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:11:50,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 11:11:50,278 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:11:50,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:11:50,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1264951492, now seen corresponding path program 1 times [2020-10-12 11:11:50,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:11:50,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183863479] [2020-10-12 11:11:50,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:11:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:50,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:50,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:50,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:50,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:50,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:52,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:53,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:53,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:53,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-12 11:11:53,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 11:11:53,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3500 [2020-10-12 11:11:53,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:53,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 11:11:53,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:11:53,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-12 11:11:53,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:53,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:11:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:53,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:53,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:53,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:11:53,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:53,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:11:53,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:53,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:11:53,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:11:53,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:11:53,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:53,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:11:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:53,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:53,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:53,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:53,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 11:11:53,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:11:53,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 11:11:53,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:11:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:11:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 11:11:53,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:53,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-12 11:11:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:54,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:54,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:54,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:54,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 11:11:54,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:11:54,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 11:11:54,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:54,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:11:54,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:11:54,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 11:11:54,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:54,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 11:11:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:54,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:54,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:54,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:54,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 11:11:54,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:11:54,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 11:11:54,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:54,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:11:54,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:11:54,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 11:11:54,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:54,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-12 11:11:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:54,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:54,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:54,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 11:11:54,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:54,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 11:11:54,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:11:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:11:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 11:11:54,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:54,164 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 127 proven. 41 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-12 11:11:54,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183863479] [2020-10-12 11:11:54,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:11:54,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:11:54,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019982171] [2020-10-12 11:11:54,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:11:54,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:11:54,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:11:54,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:11:54,166 INFO L87 Difference]: Start difference. First operand 1585 states and 1906 transitions. Second operand 9 states. [2020-10-12 11:11:56,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:11:56,435 INFO L93 Difference]: Finished difference Result 4657 states and 5870 transitions. [2020-10-12 11:11:56,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:11:56,441 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 242 [2020-10-12 11:11:56,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:11:56,455 INFO L225 Difference]: With dead ends: 4657 [2020-10-12 11:11:56,455 INFO L226 Difference]: Without dead ends: 3138 [2020-10-12 11:11:56,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-12 11:11:56,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2020-10-12 11:11:56,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 2978. [2020-10-12 11:11:56,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2978 states. [2020-10-12 11:11:56,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 3643 transitions. [2020-10-12 11:11:56,548 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 3643 transitions. Word has length 242 [2020-10-12 11:11:56,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:11:56,548 INFO L479 AbstractCegarLoop]: Abstraction has 2978 states and 3643 transitions. [2020-10-12 11:11:56,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 11:11:56,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 3643 transitions. [2020-10-12 11:11:56,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-12 11:11:56,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:11:56,557 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:11:56,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 11:11:56,558 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:11:56,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:11:56,558 INFO L82 PathProgramCache]: Analyzing trace with hash 483387031, now seen corresponding path program 1 times [2020-10-12 11:11:56,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:11:56,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048410518] [2020-10-12 11:11:56,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:11:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:56,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:56,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:56,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:56,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:57,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:57,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-12 11:11:57,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:11:57,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1253 [2020-10-12 11:11:57,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:57,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:11:57,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 11:11:57,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 243 [2020-10-12 11:11:57,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 11:11:58,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:11:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:58,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:58,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:58,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:11:58,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:58,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:11:58,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:58,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:11:58,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:11:58,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:11:58,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:58,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:11:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:58,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:58,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:58,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 11:11:58,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:58,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:11:58,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:58,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:11:58,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:11:58,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 11:11:58,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:58,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-12 11:11:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:58,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:58,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:58,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 11:11:58,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:58,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 11:11:58,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:58,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:11:58,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:11:58,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 11:11:58,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:58,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 11:11:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:58,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:58,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:11:58,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 11:11:58,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:11:58,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 11:11:58,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:11:58,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:11:58,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:11:58,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 11:11:58,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:11:58,243 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 57 proven. 101 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 11:11:58,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048410518] [2020-10-12 11:11:58,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:11:58,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:11:58,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562952665] [2020-10-12 11:11:58,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:11:58,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:11:58,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:11:58,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:11:58,245 INFO L87 Difference]: Start difference. First operand 2978 states and 3643 transitions. Second operand 7 states. [2020-10-12 11:11:59,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:11:59,681 INFO L93 Difference]: Finished difference Result 6597 states and 8318 transitions. [2020-10-12 11:11:59,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 11:11:59,685 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-12 11:11:59,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:11:59,701 INFO L225 Difference]: With dead ends: 6597 [2020-10-12 11:11:59,701 INFO L226 Difference]: Without dead ends: 3685 [2020-10-12 11:11:59,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:11:59,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3685 states. [2020-10-12 11:11:59,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3685 to 3399. [2020-10-12 11:11:59,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3399 states. [2020-10-12 11:11:59,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3399 states to 3399 states and 4151 transitions. [2020-10-12 11:11:59,811 INFO L78 Accepts]: Start accepts. Automaton has 3399 states and 4151 transitions. Word has length 248 [2020-10-12 11:11:59,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:11:59,811 INFO L479 AbstractCegarLoop]: Abstraction has 3399 states and 4151 transitions. [2020-10-12 11:11:59,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:11:59,812 INFO L276 IsEmpty]: Start isEmpty. Operand 3399 states and 4151 transitions. [2020-10-12 11:11:59,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-12 11:11:59,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:11:59,821 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:11:59,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 11:11:59,822 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:11:59,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:11:59,822 INFO L82 PathProgramCache]: Analyzing trace with hash 2114267424, now seen corresponding path program 1 times [2020-10-12 11:11:59,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:11:59,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761765310] [2020-10-12 11:11:59,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:11:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:11:59,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:11:59,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:00,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:00,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:12:00,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-12 11:12:00,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:12:00,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 935 [2020-10-12 11:12:00,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:12:00,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:12:00,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 11:12:00,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-12 11:12:00,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:12:00,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:12:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:12:00,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:00,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:12:00,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:12:00,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:12:00,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:12:00,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:12:00,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:12:00,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:12:00,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:12:00,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:12:00,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:12:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:12:00,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:00,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:12:00,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 11:12:00,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:12:00,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 11:12:00,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:12:00,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:12:00,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:12:00,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:12:00,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:12:00,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-12 11:12:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:12:00,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:00,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:12:00,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 11:12:00,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:12:00,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:12:00,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:12:00,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:12:00,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:12:00,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:12:00,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:12:00,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 11:12:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:12:00,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:00,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:12:00,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 11:12:00,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:12:00,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:12:00,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:12:00,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:12:00,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:12:00,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:12:00,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:12:00,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-12 11:12:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:12:00,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:00,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:12:00,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 11:12:00,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:12:00,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 11:12:00,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:12:00,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:12:00,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:12:00,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 11:12:00,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:12:01,033 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 117 proven. 4 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-10-12 11:12:01,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761765310] [2020-10-12 11:12:01,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:12:01,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:12:01,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639185495] [2020-10-12 11:12:01,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:12:01,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:12:01,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:12:01,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:12:01,035 INFO L87 Difference]: Start difference. First operand 3399 states and 4151 transitions. Second operand 5 states. [2020-10-12 11:12:02,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:12:02,214 INFO L93 Difference]: Finished difference Result 7708 states and 9583 transitions. [2020-10-12 11:12:02,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:12:02,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 256 [2020-10-12 11:12:02,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:12:02,231 INFO L225 Difference]: With dead ends: 7708 [2020-10-12 11:12:02,231 INFO L226 Difference]: Without dead ends: 4375 [2020-10-12 11:12:02,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:12:02,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4375 states. [2020-10-12 11:12:02,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4375 to 4350. [2020-10-12 11:12:02,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4350 states. [2020-10-12 11:12:02,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4350 states to 4350 states and 5278 transitions. [2020-10-12 11:12:02,325 INFO L78 Accepts]: Start accepts. Automaton has 4350 states and 5278 transitions. Word has length 256 [2020-10-12 11:12:02,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:12:02,326 INFO L479 AbstractCegarLoop]: Abstraction has 4350 states and 5278 transitions. [2020-10-12 11:12:02,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:12:02,326 INFO L276 IsEmpty]: Start isEmpty. Operand 4350 states and 5278 transitions. [2020-10-12 11:12:02,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-12 11:12:02,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:12:02,339 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:12:02,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 11:12:02,339 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:12:02,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:12:02,340 INFO L82 PathProgramCache]: Analyzing trace with hash 749254074, now seen corresponding path program 1 times [2020-10-12 11:12:02,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:12:02,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985715463] [2020-10-12 11:12:02,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:12:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:12:02,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:02,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:04,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:04,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:06,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:12:06,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-12 11:12:06,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:12:06,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3944 [2020-10-12 11:12:06,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:12:06,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 11:12:06,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-12 11:12:06,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 11:12:06,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:12:06,790 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2020-10-12 11:12:06,948 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2020-10-12 11:12:07,098 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 39 [2020-10-12 11:12:07,224 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 35 [2020-10-12 11:12:07,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:12:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:12:07,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:07,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:12:07,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:12:07,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:12:07,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:12:07,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:12:07,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:12:07,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:12:07,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:12:07,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:12:07,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:12:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:12:07,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:07,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:12:07,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 11:12:07,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:12:07,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:12:07,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:12:07,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:12:07,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:12:07,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:12:07,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:12:07,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 11:12:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:12:07,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:07,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:12:07,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 11:12:07,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:12:07,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:12:07,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:12:07,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:12:07,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:12:07,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:12:07,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:12:07,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-12 11:12:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:12:07,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:07,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:12:07,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 11:12:07,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:12:07,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:12:07,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:12:07,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:12:07,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:12:07,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:12:07,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:12:07,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-12 11:12:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:12:07,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:07,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:12:07,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 11:12:07,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:12:07,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 11:12:07,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:12:07,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:12:07,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:12:07,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 11:12:07,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:12:07,870 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 151 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-10-12 11:12:07,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985715463] [2020-10-12 11:12:07,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:12:07,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 11:12:07,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307190147] [2020-10-12 11:12:07,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 11:12:07,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:12:07,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 11:12:07,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:12:07,872 INFO L87 Difference]: Start difference. First operand 4350 states and 5278 transitions. Second operand 13 states. [2020-10-12 11:12:08,874 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-12 11:12:09,038 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-12 11:12:09,397 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 112 [2020-10-12 11:12:09,901 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 109 [2020-10-12 11:12:10,257 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 106 [2020-10-12 11:12:10,714 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 103 [2020-10-12 11:12:11,138 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 98 [2020-10-12 11:12:11,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:12:11,176 INFO L93 Difference]: Finished difference Result 8699 states and 10645 transitions. [2020-10-12 11:12:11,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:12:11,181 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 290 [2020-10-12 11:12:11,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:12:11,206 INFO L225 Difference]: With dead ends: 8699 [2020-10-12 11:12:11,206 INFO L226 Difference]: Without dead ends: 4415 [2020-10-12 11:12:11,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2020-10-12 11:12:11,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4415 states. [2020-10-12 11:12:11,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4415 to 4413. [2020-10-12 11:12:11,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4413 states. [2020-10-12 11:12:11,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4413 states to 4413 states and 5350 transitions. [2020-10-12 11:12:11,297 INFO L78 Accepts]: Start accepts. Automaton has 4413 states and 5350 transitions. Word has length 290 [2020-10-12 11:12:11,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:12:11,297 INFO L479 AbstractCegarLoop]: Abstraction has 4413 states and 5350 transitions. [2020-10-12 11:12:11,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 11:12:11,297 INFO L276 IsEmpty]: Start isEmpty. Operand 4413 states and 5350 transitions. [2020-10-12 11:12:11,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-12 11:12:11,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:12:11,311 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-12 11:12:11,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 11:12:11,311 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:12:11,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:12:11,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1649280565, now seen corresponding path program 1 times [2020-10-12 11:12:11,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:12:11,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238183696] [2020-10-12 11:12:11,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:12:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:12:11,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:11,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:11,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:12,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:12:12,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-12 11:12:12,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:12:12,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1063 [2020-10-12 11:12:12,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:12:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:12:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-12 11:12:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 11:12:12,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:12:12,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:12:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:12:12,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:12,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:12:12,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:12:12,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:12:12,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:12:12,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:12:12,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:12:12,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:12:12,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:12:12,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:12:12,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:12:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:12:12,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:12,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:12:12,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 11:12:12,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:12:12,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 11:12:12,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:12:12,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:12:12,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:12:12,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:12:12,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:12:12,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 11:12:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:12:12,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:12,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:12:12,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 11:12:12,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:12:12,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:12:12,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:12:12,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:12:12,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:12:12,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:12:12,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:12:12,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-12 11:12:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:12:12,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:12,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:12:12,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 11:12:12,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:12:12,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 11:12:12,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:12:12,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:12:12,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:12:12,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 11:12:12,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:12:12,888 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 161 proven. 3 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2020-10-12 11:12:12,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238183696] [2020-10-12 11:12:12,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:12:12,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:12:12,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613491783] [2020-10-12 11:12:12,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:12:12,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:12:12,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:12:12,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:12:12,890 INFO L87 Difference]: Start difference. First operand 4413 states and 5350 transitions. Second operand 5 states. [2020-10-12 11:12:14,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:12:14,022 INFO L93 Difference]: Finished difference Result 8709 states and 10574 transitions. [2020-10-12 11:12:14,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:12:14,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 299 [2020-10-12 11:12:14,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:12:14,038 INFO L225 Difference]: With dead ends: 8709 [2020-10-12 11:12:14,039 INFO L226 Difference]: Without dead ends: 4278 [2020-10-12 11:12:14,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:12:14,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4278 states. [2020-10-12 11:12:14,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4278 to 4234. [2020-10-12 11:12:14,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4234 states. [2020-10-12 11:12:14,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4234 states to 4234 states and 5112 transitions. [2020-10-12 11:12:14,135 INFO L78 Accepts]: Start accepts. Automaton has 4234 states and 5112 transitions. Word has length 299 [2020-10-12 11:12:14,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:12:14,136 INFO L479 AbstractCegarLoop]: Abstraction has 4234 states and 5112 transitions. [2020-10-12 11:12:14,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:12:14,136 INFO L276 IsEmpty]: Start isEmpty. Operand 4234 states and 5112 transitions. [2020-10-12 11:12:14,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-12 11:12:14,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:12:14,149 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-12 11:12:14,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 11:12:14,150 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:12:14,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:12:14,150 INFO L82 PathProgramCache]: Analyzing trace with hash -109440853, now seen corresponding path program 1 times [2020-10-12 11:12:14,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:12:14,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557616241] [2020-10-12 11:12:14,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:12:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:12:14,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:14,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:16,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:16,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:17,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:19,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:12:19,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-12 11:12:19,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:12:19,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 11:12:19,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:12:19,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 11:12:19,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 219 [2020-10-12 11:12:19,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 11:12:19,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:12:19,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:12:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:12:19,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:19,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:12:19,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:12:19,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:12:19,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:12:19,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:12:19,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:12:19,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:12:19,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:12:19,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:12:19,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:12:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:12:19,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:19,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:12:19,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 11:12:19,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:12:19,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 11:12:19,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:12:19,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:12:19,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:12:19,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:12:19,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:12:19,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 11:12:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:12:19,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:19,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:12:19,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 11:12:19,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:12:19,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:12:19,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:12:19,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:12:19,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:12:19,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:12:19,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:12:19,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-12 11:12:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:12:19,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:19,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:12:19,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 11:12:19,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:12:19,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:12:19,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:12:19,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:12:19,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:12:19,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:12:19,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:12:19,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-12 11:12:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:12:19,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:19,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:12:19,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 11:12:19,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:12:19,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 11:12:19,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:12:19,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:12:19,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:12:19,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:12:19,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:12:19,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-12 11:12:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:12:19,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:12:19,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:12:19,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 11:12:19,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:12:19,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 11:12:19,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:12:19,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:12:19,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:12:19,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:12:19,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:12:20,231 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 193 proven. 5 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2020-10-12 11:12:20,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557616241] [2020-10-12 11:12:20,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:12:20,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 11:12:20,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73510511] [2020-10-12 11:12:20,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 11:12:20,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:12:20,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 11:12:20,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-12 11:12:20,233 INFO L87 Difference]: Start difference. First operand 4234 states and 5112 transitions. Second operand 14 states. [2020-10-12 11:12:22,008 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-12 11:12:22,242 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-10-12 11:12:22,593 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-10-12 11:12:22,934 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-10-12 11:12:23,233 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2020-10-12 11:12:23,449 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2020-10-12 11:12:23,754 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-10-12 11:12:23,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:12:23,817 INFO L93 Difference]: Finished difference Result 7904 states and 9496 transitions. [2020-10-12 11:12:23,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 11:12:23,818 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 333 [2020-10-12 11:12:23,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:12:23,818 INFO L225 Difference]: With dead ends: 7904 [2020-10-12 11:12:23,818 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 11:12:23,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=170, Invalid=382, Unknown=0, NotChecked=0, Total=552 [2020-10-12 11:12:23,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 11:12:23,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 11:12:23,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 11:12:23,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 11:12:23,832 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 333 [2020-10-12 11:12:23,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:12:23,832 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 11:12:23,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 11:12:23,833 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 11:12:23,833 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 11:12:23,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 11:12:23,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 11:12:24,669 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 122 [2020-10-12 11:12:24,830 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 90 [2020-10-12 11:12:25,018 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 45 [2020-10-12 11:12:28,397 WARN L193 SmtUtils]: Spent 3.36 s on a formula simplification. DAG size of input: 331 DAG size of output: 175 [2020-10-12 11:12:29,316 WARN L193 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 109 [2020-10-12 11:12:29,979 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 80 [2020-10-12 11:12:29,983 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-12 11:12:29,984 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~a17~0 |old(~a17~0)|) (= ~a21~0 |old(~a21~0)|) (= ~c~0 |old(~c~0)|) (= ~z~0 |old(~z~0)|) (= ~a12~0 |old(~a12~0)|) (= ~a8~0 |old(~a8~0)|) (= ~f~0 |old(~f~0)|) (= ~a7~0 |old(~a7~0)|) (= ~w~0 |old(~w~0)|) (= ~a~0 |old(~a~0)|) (= ~a20~0 |old(~a20~0)|) (= ~u~0 |old(~u~0)|) (= ~e~0 |old(~e~0)|) (= ~x~0 |old(~x~0)|) (= ~a16~0 |old(~a16~0)|) (= ~d~0 |old(~d~0)|) (= ~y~0 |old(~y~0)|) (= ~v~0 |old(~v~0)|) (= ~b~0 |old(~b~0)|)) [2020-10-12 11:12:29,984 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 11:12:29,984 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-10-12 11:12:29,984 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-10-12 11:12:29,985 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,985 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,985 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,985 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,985 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,985 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,986 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-10-12 11:12:29,986 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-10-12 11:12:29,986 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-10-12 11:12:29,986 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-10-12 11:12:29,987 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-10-12 11:12:29,987 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-10-12 11:12:29,987 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-10-12 11:12:29,987 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-10-12 11:12:29,987 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-10-12 11:12:29,987 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-10-12 11:12:29,987 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,987 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,987 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,988 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,988 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,988 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,988 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-10-12 11:12:29,988 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-10-12 11:12:29,988 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-10-12 11:12:29,988 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-10-12 11:12:29,988 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-10-12 11:12:29,988 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-10-12 11:12:29,989 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-10-12 11:12:29,989 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-10-12 11:12:29,989 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-10-12 11:12:29,989 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-10-12 11:12:29,989 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-10-12 11:12:29,989 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 554) no Hoare annotation was computed. [2020-10-12 11:12:29,989 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-10-12 11:12:29,989 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-10-12 11:12:29,990 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-10-12 11:12:29,990 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-10-12 11:12:29,990 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,990 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,990 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,990 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,990 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,990 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-10-12 11:12:29,990 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-10-12 11:12:29,990 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-10-12 11:12:29,990 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-10-12 11:12:29,990 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-10-12 11:12:29,991 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-10-12 11:12:29,991 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-10-12 11:12:29,991 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-10-12 11:12:29,991 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-10-12 11:12:29,991 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,991 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,991 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,991 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,991 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,991 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-10-12 11:12:29,991 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-10-12 11:12:29,992 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-10-12 11:12:29,992 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-10-12 11:12:29,992 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-10-12 11:12:29,992 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-10-12 11:12:29,992 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-10-12 11:12:29,992 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-10-12 11:12:29,992 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-10-12 11:12:29,992 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-10-12 11:12:29,992 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-10-12 11:12:29,993 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-10-12 11:12:29,993 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-10-12 11:12:29,993 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,993 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,993 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,993 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,993 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,993 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-10-12 11:12:29,993 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-10-12 11:12:29,994 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-10-12 11:12:29,994 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-10-12 11:12:29,994 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-10-12 11:12:29,994 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-10-12 11:12:29,994 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-10-12 11:12:29,994 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-10-12 11:12:29,994 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-10-12 11:12:29,994 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,994 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,994 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,994 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,994 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,994 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,994 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-10-12 11:12:29,995 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,995 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-10-12 11:12:29,995 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-10-12 11:12:29,995 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-10-12 11:12:29,995 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-10-12 11:12:29,995 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-10-12 11:12:29,995 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-10-12 11:12:29,995 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-10-12 11:12:29,995 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-10-12 11:12:29,995 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-10-12 11:12:29,995 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-10-12 11:12:29,995 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-10-12 11:12:29,995 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-10-12 11:12:29,995 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-10-12 11:12:29,995 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,996 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,996 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,996 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,996 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,996 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-10-12 11:12:29,996 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-10-12 11:12:29,996 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-10-12 11:12:29,996 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-10-12 11:12:29,996 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-10-12 11:12:29,996 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-10-12 11:12:29,997 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-10-12 11:12:29,997 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-10-12 11:12:29,997 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,997 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,997 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,997 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,997 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,997 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-10-12 11:12:29,997 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-10-12 11:12:29,997 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-10-12 11:12:29,998 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-10-12 11:12:29,998 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-10-12 11:12:29,998 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-10-12 11:12:29,998 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-10-12 11:12:29,998 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-10-12 11:12:29,998 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-10-12 11:12:29,998 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-10-12 11:12:29,999 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse18 (not (= |calculate_output_#in~input| 1))) (.cse1 (= ~a7~0 |old(~a7~0)|)) (.cse0 (= ~a17~0 |old(~a17~0)|)) (.cse3 (= ~a20~0 |old(~a20~0)|)) (.cse5 (= ~a8~0 |old(~a8~0)|)) (.cse22 (= ~a21~0 ~a20~0)) (.cse19 (not (<= 2 |calculate_output_#in~input|))) (.cse15 (not (<= |calculate_output_#in~input| 6))) (.cse27 (= |old(~a7~0)| 1))) (let ((.cse6 (not (= |old(~a8~0)| 13))) (.cse9 (= ~a8~0 13)) (.cse8 (not .cse27)) (.cse11 (not (= |old(~a20~0)| 1))) (.cse7 (and (or (not (<= |calculate_output_#in~input| 5)) (not (<= 5 |calculate_output_#in~input|))) (or (not (<= 4 |calculate_output_#in~input|)) (not (<= |calculate_output_#in~input| 4))) (or (not (<= |calculate_output_#in~input| 2)) .cse19) (or (not (<= |calculate_output_#in~input| 3)) (not (<= 3 |calculate_output_#in~input|))) (or .cse15 (not (<= 6 |calculate_output_#in~input|))) (or (not (<= 1 |calculate_output_#in~input|)) (not (<= |calculate_output_#in~input| 1))))) (.cse20 (not (= |old(~a17~0)| 1))) (.cse2 (= ~a21~0 |old(~a21~0)|)) (.cse10 (= ~a16~0 4)) (.cse21 (= ~a17~0 1)) (.cse14 (not (= 4 |old(~a16~0)|))) (.cse16 (not (= 6 |old(~a16~0)|))) (.cse4 (= ~a16~0 |old(~a16~0)|)) (.cse24 (= ~a8~0 15)) (.cse25 (not (= 15 |old(~a8~0)|))) (.cse12 (= |old(~a21~0)| 1)) (.cse28 (not (<= 4 |old(~a16~0)|))) (.cse29 (and .cse1 .cse0 .cse3 (<= ~a16~0 4) .cse5 (<= 4 ~a16~0) .cse22)) (.cse31 (not (<= |old(~a16~0)| 4))) (.cse23 (not (= |old(~a20~0)| |old(~a21~0)|))) (.cse26 (not (<= |old(~a20~0)| 1))) (.cse30 (not (<= |old(~a7~0)| 0))) (.cse17 (not (<= |old(~a17~0)| 0))) (.cse32 (and (not (= |calculate_output_#in~input| 3)) (not (= |calculate_output_#in~input| 2)) (not (= |calculate_output_#in~input| 4)) .cse18 (not (= |calculate_output_#in~input| 5)) (not (= |calculate_output_#in~input| 6)))) (.cse13 (not (= ~a12~0 8)))) (and (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (not (<= |old(~a20~0)| 0))) (or .cse6 .cse7 .cse8 (and .cse1 .cse0 .cse2 .cse3 .cse9 .cse10) .cse11 .cse12 .cse13 .cse14 (not (= 0 |old(~a17~0)|))) (or .cse15 .cse6 (and .cse1 .cse0 .cse2 .cse3 .cse4 .cse9) .cse8 .cse16 .cse11 .cse17 .cse12 (and .cse18 .cse19) .cse13) (or .cse20 (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse21) .cse11) (or (and .cse0 .cse1 .cse3 .cse5 .cse22 (= 5 ~a16~0)) .cse11 .cse23 (not (= 5 |old(~a16~0)|))) (or .cse7 (and .cse1 .cse0 .cse3 .cse24 .cse10 .cse22) .cse17 .cse23 .cse25 .cse13 .cse14 .cse26 .cse27) (or .cse28 .cse29 .cse30 (not (<= |old(~a8~0)| 13)) .cse31 (not (<= 13 |old(~a8~0)|)) .cse17 .cse23 .cse13 .cse26) (or .cse20 (and .cse1 .cse2 .cse3 .cse24 .cse10 .cse21) .cse25 .cse14 .cse27) (or (= |old(~a7~0)| |old(~a20~0)|) .cse16 (and .cse1 .cse0 .cse3 .cse4 .cse24 .cse22) .cse23 .cse32 .cse25 (not .cse12) .cse13) (or .cse28 .cse29 (not (<= 14 |old(~a8~0)|)) .cse30 .cse31 (not (<= |old(~a8~0)| 14)) .cse17 .cse23 .cse13 .cse26) (or (and .cse30 (not (<= 2 |old(~a7~0)|))) (not (<= |old(~a16~0)| 6)) (not (<= |old(~a8~0)| 15)) (not (< 5 |old(~a16~0)|)) (not (<= |old(~a21~0)| 1)) (and .cse0 .cse1 (<= ~a16~0 6) .cse3 (< 5 ~a16~0) (<= ~a21~0 1) (<= 1 ~a21~0) (<= ~a8~0 15) (<= 15 ~a8~0)) (not (<= 15 |old(~a8~0)|)) (not (<= 1 |old(~a21~0)|)) .cse17 .cse32 .cse13)))) [2020-10-12 11:12:29,999 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-10-12 11:12:29,999 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,999 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,999 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,999 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,999 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-10-12 11:12:29,999 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,999 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:29,999 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-10-12 11:12:30,000 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-10-12 11:12:30,000 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-10-12 11:12:30,000 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-10-12 11:12:30,000 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-10-12 11:12:30,000 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-10-12 11:12:30,000 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-10-12 11:12:30,000 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-10-12 11:12:30,000 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-10-12 11:12:30,001 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-10-12 11:12:30,001 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-10-12 11:12:30,001 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-10-12 11:12:30,001 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:30,001 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:30,001 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:30,001 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:30,001 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:30,001 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-10-12 11:12:30,001 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:30,002 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-10-12 11:12:30,002 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-10-12 11:12:30,002 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-10-12 11:12:30,002 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-10-12 11:12:30,002 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-10-12 11:12:30,002 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-10-12 11:12:30,002 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-10-12 11:12:30,002 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-10-12 11:12:30,002 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-10-12 11:12:30,002 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-10-12 11:12:30,003 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-10-12 11:12:30,003 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-10-12 11:12:30,003 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-10-12 11:12:30,003 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-10-12 11:12:30,003 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:30,003 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:30,003 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:30,003 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:30,003 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:30,003 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-10-12 11:12:30,004 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-10-12 11:12:30,004 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-10-12 11:12:30,004 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-10-12 11:12:30,004 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-10-12 11:12:30,004 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-10-12 11:12:30,004 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-10-12 11:12:30,004 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-10-12 11:12:30,004 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-10-12 11:12:30,004 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-10-12 11:12:30,004 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-10-12 11:12:30,005 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 11:12:30,005 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= ~a12~0 8) (<= ~a7~0 0) (= ~a21~0 ~a20~0) (<= ~a20~0 1) (<= 1 ~a21~0) (= 5 ~a16~0) (<= ~a8~0 15) (<= 15 ~a8~0) (= ~a17~0 1)) [2020-10-12 11:12:30,005 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 11:12:30,005 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 11:12:30,005 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (and (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (= ~a20~0 |old(~a20~0)|) (= ~a21~0 ~a20~0) (= 5 ~a16~0) (<= ~a8~0 15) (<= 15 ~a8~0)) (not (= |old(~a17~0)| 1)) (not (<= |old(~a8~0)| 15)) (not (<= |old(~a7~0)| 0)) (not (<= 15 |old(~a8~0)|)) (not (<= 1 |old(~a21~0)|)) (not (= |old(~a20~0)| |old(~a21~0)|)) (not (= 5 |old(~a16~0)|)) (not (= ~a12~0 8)) (not (<= |old(~a20~0)| 1))) [2020-10-12 11:12:30,005 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-10-12 11:12:30,006 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse5 (= ~a7~0 1)) (.cse19 (<= main_~input~0 6)) (.cse20 (<= 1 main_~input~0))) (let ((.cse3 (= ~a17~0 1)) (.cse6 (or (and (<= 4 main_~input~0) (<= main_~input~0 4)) (and (<= 2 main_~input~0) (<= main_~input~0 2)) (and (<= 6 main_~input~0) .cse19) (and (<= main_~input~0 3) (<= 3 main_~input~0)) (and (<= main_~input~0 1) .cse20) (and (<= main_~input~0 5) (<= 5 main_~input~0)))) (.cse1 (= ~a16~0 4)) (.cse0 (= ~a8~0 15)) (.cse18 (or (= 5 main_~input~0) (= 6 main_~input~0) (= main_~input~0 4) (= 3 main_~input~0) (= main_~input~0 1) (= 2 main_~input~0))) (.cse10 (<= ~a21~0 1)) (.cse2 (not .cse5)) (.cse12 (<= 1 ~a21~0)) (.cse14 (<= ~a16~0 4)) (.cse15 (<= 4 ~a16~0)) (.cse16 (<= ~a7~0 0)) (.cse11 (<= ~a20~0 1)) (.cse13 (= ~a21~0 ~a20~0)) (.cse17 (= ~a16~0 6)) (.cse9 (<= ~a17~0 0)) (.cse7 (not (= ~a21~0 1))) (.cse8 (= ~a8~0 13)) (.cse4 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse3) (not (<= |old(~a8~0)| 15)) (not (<= |old(~a7~0)| 0)) (and .cse5 .cse6 .cse7 .cse8 .cse4 .cse1 (= ~a17~0 0)) (and .cse6 .cse9 .cse0 .cse1 .cse10 .cse11 .cse12 .cse2) (and .cse4 .cse13 (= 5 ~a16~0)) (<= ~a20~0 0) (not (<= |old(~a20~0)| 1)) (not (= |old(~a17~0)| 1)) (and (<= 14 ~a8~0) (<= ~a8~0 14) .cse14 .cse9 .cse15 .cse16 .cse11 .cse13) (and .cse17 .cse18 .cse0 .cse4 .cse13 .cse2) (not (<= 1 |old(~a21~0)|)) (not (<= 15 |old(~a8~0)|)) (not (= |old(~a20~0)| |old(~a21~0)|)) (not (= 5 |old(~a16~0)|)) (and (<= ~a16~0 6) (<= 6 ~a16~0) .cse18 .cse9 .cse10 .cse2 .cse12 (<= ~a8~0 15) (<= 15 ~a8~0)) (not (= ~a12~0 8)) (and (<= 13 ~a8~0) .cse14 .cse9 .cse15 .cse16 .cse11 .cse13 (<= ~a8~0 13)) (and .cse19 .cse5 .cse17 .cse20 .cse9 .cse7 .cse8 .cse4)))) [2020-10-12 11:12:30,006 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-10-12 11:12:30,006 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-10-12 11:12:30,006 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse7 (= ~a7~0 1))) (let ((.cse3 (= ~a17~0 1)) (.cse5 (= ~a16~0 6)) (.cse0 (= ~a8~0 15)) (.cse9 (not (= ~a21~0 1))) (.cse10 (= ~a8~0 13)) (.cse4 (= ~a20~0 1)) (.cse1 (= ~a16~0 4)) (.cse11 (<= ~a21~0 1)) (.cse13 (<= 1 ~a21~0)) (.cse2 (not .cse7)) (.cse14 (<= ~a16~0 4)) (.cse8 (<= ~a17~0 0)) (.cse15 (<= 4 ~a16~0)) (.cse16 (<= ~a7~0 0)) (.cse12 (<= ~a20~0 1)) (.cse6 (= ~a21~0 ~a20~0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse3) (and .cse5 .cse0 .cse4 .cse6 .cse2) (not (<= |old(~a8~0)| 15)) (not (<= |old(~a7~0)| 0)) (and .cse7 .cse5 .cse8 .cse9 .cse10 .cse4) (and .cse8 .cse0 .cse1 .cse11 .cse12 .cse13 .cse2) (and .cse4 .cse6 (= 5 ~a16~0)) (<= ~a20~0 0) (not (<= |old(~a20~0)| 1)) (not (= |old(~a17~0)| 1)) (and (<= 14 ~a8~0) (<= ~a8~0 14) .cse14 .cse8 .cse15 .cse16 .cse12 .cse6) (not (<= 1 |old(~a21~0)|)) (and .cse7 .cse9 .cse10 .cse4 .cse1 (= ~a17~0 0)) (not (<= 15 |old(~a8~0)|)) (not (= |old(~a20~0)| |old(~a21~0)|)) (not (= 5 |old(~a16~0)|)) (and (<= ~a16~0 6) (<= 6 ~a16~0) .cse8 .cse11 .cse13 .cse2 (<= ~a8~0 15) (<= 15 ~a8~0)) (not (= ~a12~0 8)) (and (<= 13 ~a8~0) .cse14 .cse8 .cse15 .cse16 .cse12 .cse6 (<= ~a8~0 13))))) [2020-10-12 11:12:30,006 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-10-12 11:12:30,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 11:12:30 BoogieIcfgContainer [2020-10-12 11:12:30,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 11:12:30,034 INFO L168 Benchmark]: Toolchain (without parser) took 148534.79 ms. Allocated memory was 147.3 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 101.5 MB in the beginning and 1.1 GB in the end (delta: -981.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2020-10-12 11:12:30,034 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 11:12:30,035 INFO L168 Benchmark]: CACSL2BoogieTranslator took 814.22 ms. Allocated memory was 147.3 MB in the beginning and 205.5 MB in the end (delta: 58.2 MB). Free memory was 101.3 MB in the beginning and 171.1 MB in the end (delta: -69.8 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2020-10-12 11:12:30,035 INFO L168 Benchmark]: Boogie Preprocessor took 96.23 ms. Allocated memory is still 205.5 MB. Free memory was 171.1 MB in the beginning and 165.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. [2020-10-12 11:12:30,036 INFO L168 Benchmark]: RCFGBuilder took 1249.23 ms. Allocated memory was 205.5 MB in the beginning and 237.5 MB in the end (delta: 32.0 MB). Free memory was 165.6 MB in the beginning and 176.6 MB in the end (delta: -11.0 MB). Peak memory consumption was 79.8 MB. Max. memory is 7.1 GB. [2020-10-12 11:12:30,037 INFO L168 Benchmark]: TraceAbstraction took 146369.60 ms. Allocated memory was 237.5 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 175.2 MB in the beginning and 1.1 GB in the end (delta: -908.0 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2020-10-12 11:12:30,039 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 814.22 ms. Allocated memory was 147.3 MB in the beginning and 205.5 MB in the end (delta: 58.2 MB). Free memory was 101.3 MB in the beginning and 171.1 MB in the end (delta: -69.8 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.23 ms. Allocated memory is still 205.5 MB. Free memory was 171.1 MB in the beginning and 165.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1249.23 ms. Allocated memory was 205.5 MB in the beginning and 237.5 MB in the end (delta: 32.0 MB). Free memory was 165.6 MB in the beginning and 176.6 MB in the end (delta: -11.0 MB). Peak memory consumption was 79.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 146369.60 ms. Allocated memory was 237.5 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 175.2 MB in the beginning and 1.1 GB in the end (delta: -908.0 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 554]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 583]: Loop Invariant Derived loop invariant: (((((((((((((((((((((a8 == 15 && a16 == 4) && !(a7 == 1)) && a17 == 1) || (a20 == 1 && a17 == 1)) || ((((a16 == 6 && a8 == 15) && a20 == 1) && a21 == a20) && !(a7 == 1))) || !(\old(a8) <= 15)) || !(\old(a7) <= 0)) || (((((a7 == 1 && a16 == 6) && a17 <= 0) && !(a21 == 1)) && a8 == 13) && a20 == 1)) || ((((((a17 <= 0 && a8 == 15) && a16 == 4) && a21 <= 1) && a20 <= 1) && 1 <= a21) && !(a7 == 1))) || ((a20 == 1 && a21 == a20) && 5 == a16)) || a20 <= 0) || !(\old(a20) <= 1)) || !(\old(a17) == 1)) || (((((((14 <= a8 && a8 <= 14) && a16 <= 4) && a17 <= 0) && 4 <= a16) && a7 <= 0) && a20 <= 1) && a21 == a20)) || !(1 <= \old(a21))) || (((((a7 == 1 && !(a21 == 1)) && a8 == 13) && a20 == 1) && a16 == 4) && a17 == 0)) || !(15 <= \old(a8))) || !(\old(a20) == \old(a21))) || !(5 == \old(a16))) || (((((((a16 <= 6 && 6 <= a16) && a17 <= 0) && a21 <= 1) && 1 <= a21) && !(a7 == 1)) && a8 <= 15) && 15 <= a8)) || !(a12 == 8)) || (((((((13 <= a8 && a16 <= 4) && a17 <= 0) && 4 <= a16) && a7 <= 0) && a20 <= 1) && a21 == a20) && a8 <= 13) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 140.0s, OverallIterations: 21, TraceHistogramMax: 6, AutomataDifference: 58.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 547 SDtfs, 7602 SDslu, 1007 SDs, 0 SdLazy, 21199 SolverSat, 1645 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 24.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 536 GetRequests, 186 SyntacticMatches, 15 SemanticMatches, 335 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 42.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4413occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 21 MinimizatonAttempts, 815 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 348 PreInvPairs, 423 NumberOfFragments, 1395 HoareAnnotationTreeSize, 348 FomulaSimplifications, 12946 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 7 FomulaSimplificationsInter, 7493 FormulaSimplificationTreeSizeReductionInter, 5.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 76.7s InterpolantComputationTime, 4354 NumberOfCodeBlocks, 4354 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 4333 ConstructedInterpolants, 0 QuantifiedInterpolants, 10181293 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 1 PerfectInterpolantSequences, 2484/2733 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...