/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:11:56,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:11:56,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:11:56,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:11:56,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:11:56,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:11:56,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:11:56,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:11:56,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:11:56,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:11:56,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:11:56,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:11:56,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:11:56,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:11:56,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:11:56,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:11:56,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:11:56,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:11:56,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:11:56,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:11:56,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:11:56,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:11:56,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:11:56,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:11:56,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:11:56,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:11:56,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:11:56,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:11:56,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:11:56,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:11:56,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:11:56,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:11:56,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:11:56,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:11:56,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:11:56,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:11:56,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:11:56,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:11:56,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:11:56,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:11:56,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:11:56,366 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:11:56,402 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:11:56,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:11:56,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:11:56,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:11:56,404 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:11:56,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:11:56,404 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:11:56,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:11:56,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:11:56,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:11:56,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:11:56,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:11:56,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:11:56,406 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:11:56,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:11:56,407 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:11:56,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:11:56,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:11:56,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:11:56,407 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:11:56,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:11:56,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:11:56,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:11:56,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:11:56,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:11:56,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:11:56,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:11:56,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:11:56,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:11:56,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:11:56,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:11:56,694 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:11:56,699 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:11:56,700 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:11:56,701 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:11:56,701 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label52.c [2020-10-13 08:11:56,773 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be61d77e4/c6c85bdd026949358938cf67c557046d/FLAG80ecaaaf6 [2020-10-13 08:11:57,310 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:11:57,311 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label52.c [2020-10-13 08:11:57,324 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be61d77e4/c6c85bdd026949358938cf67c557046d/FLAG80ecaaaf6 [2020-10-13 08:11:57,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be61d77e4/c6c85bdd026949358938cf67c557046d [2020-10-13 08:11:57,557 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:11:57,558 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:11:57,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:11:57,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:11:57,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:11:57,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:11:57" (1/1) ... [2020-10-13 08:11:57,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@129c6bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:57, skipping insertion in model container [2020-10-13 08:11:57,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:11:57" (1/1) ... [2020-10-13 08:11:57,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:11:57,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:11:58,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:11:58,235 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:11:58,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:11:58,575 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:11:58,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:58 WrapperNode [2020-10-13 08:11:58,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:11:58,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:11:58,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:11:58,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:11:58,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:58" (1/1) ... [2020-10-13 08:11:58,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:58" (1/1) ... [2020-10-13 08:11:58,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:58" (1/1) ... [2020-10-13 08:11:58,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:58" (1/1) ... [2020-10-13 08:11:58,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:58" (1/1) ... [2020-10-13 08:11:58,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:58" (1/1) ... [2020-10-13 08:11:58,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:58" (1/1) ... [2020-10-13 08:11:58,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:11:58,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:11:58,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:11:58,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:11:58,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:11:58,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:11:58,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:11:58,796 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:11:58,796 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:11:58,797 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:11:58,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:11:58,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:11:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:11:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:11:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:11:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:12:00,426 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:12:00,427 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:12:00,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:12:00 BoogieIcfgContainer [2020-10-13 08:12:00,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:12:00,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:12:00,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:12:00,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:12:00,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:11:57" (1/3) ... [2020-10-13 08:12:00,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed903e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:12:00, skipping insertion in model container [2020-10-13 08:12:00,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:58" (2/3) ... [2020-10-13 08:12:00,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed903e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:12:00, skipping insertion in model container [2020-10-13 08:12:00,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:12:00" (3/3) ... [2020-10-13 08:12:00,443 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label52.c [2020-10-13 08:12:00,454 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:12:00,462 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:12:00,477 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:12:00,504 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:12:00,504 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:12:00,505 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:12:00,505 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:12:00,505 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:12:00,505 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:12:00,505 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:12:00,506 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:12:00,535 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-13 08:12:00,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 08:12:00,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:00,548 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] [2020-10-13 08:12:00,549 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:00,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:00,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1581984787, now seen corresponding path program 1 times [2020-10-13 08:12:00,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:00,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427317639] [2020-10-13 08:12:00,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:00,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:01,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:01,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 08:12:01,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:01,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-10-13 08:12:01,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:12:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:12:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 08:12:01,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:12:01,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:01,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:01,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:01,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:01,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:01,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 08:12:01,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:01,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:01,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:01,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:12:01,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:01,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:12:01,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427317639] [2020-10-13 08:12:01,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:12:01,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:12:01,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23345969] [2020-10-13 08:12:01,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:12:01,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:01,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:12:01,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:12:01,555 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-10-13 08:12:03,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:03,734 INFO L93 Difference]: Finished difference Result 791 states and 1386 transitions. [2020-10-13 08:12:03,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:03,739 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-13 08:12:03,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:03,757 INFO L225 Difference]: With dead ends: 791 [2020-10-13 08:12:03,757 INFO L226 Difference]: Without dead ends: 434 [2020-10-13 08:12:03,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:03,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-13 08:12:03,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 430. [2020-10-13 08:12:03,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-13 08:12:03,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 618 transitions. [2020-10-13 08:12:03,849 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 618 transitions. Word has length 58 [2020-10-13 08:12:03,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:03,850 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 618 transitions. [2020-10-13 08:12:03,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:12:03,850 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 618 transitions. [2020-10-13 08:12:03,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 08:12:03,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:03,857 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:03,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:12:03,857 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:03,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:03,858 INFO L82 PathProgramCache]: Analyzing trace with hash -734949134, now seen corresponding path program 1 times [2020-10-13 08:12:03,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:03,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276150461] [2020-10-13 08:12:03,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:03,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:04,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:04,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:05,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:05,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 08:12:05,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:12:05,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1285 [2020-10-13 08:12:05,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:05,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:05,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 08:12:05,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 08:12:05,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:12:05,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:05,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:05,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:05,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:05,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:05,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:12:05,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:05,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:05,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:05,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:05,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:05,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:05,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:05,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:05,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:12:05,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:05,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 08:12:05,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:05,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:05,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:05,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:12:05,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:05,523 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:12:05,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276150461] [2020-10-13 08:12:05,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:05,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:05,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916859232] [2020-10-13 08:12:05,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:05,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:05,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:05,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:05,536 INFO L87 Difference]: Start difference. First operand 430 states and 618 transitions. Second operand 5 states. [2020-10-13 08:12:07,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:07,093 INFO L93 Difference]: Finished difference Result 879 states and 1263 transitions. [2020-10-13 08:12:07,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:07,094 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-13 08:12:07,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:07,098 INFO L225 Difference]: With dead ends: 879 [2020-10-13 08:12:07,099 INFO L226 Difference]: Without dead ends: 434 [2020-10-13 08:12:07,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:12:07,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-13 08:12:07,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 430. [2020-10-13 08:12:07,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-13 08:12:07,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 616 transitions. [2020-10-13 08:12:07,127 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 616 transitions. Word has length 130 [2020-10-13 08:12:07,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:07,128 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 616 transitions. [2020-10-13 08:12:07,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:07,128 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 616 transitions. [2020-10-13 08:12:07,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 08:12:07,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:07,131 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:07,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:12:07,131 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:07,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:07,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1435997701, now seen corresponding path program 1 times [2020-10-13 08:12:07,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:07,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736534098] [2020-10-13 08:12:07,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:07,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:07,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:08,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:08,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 08:12:08,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:12:08,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1327 [2020-10-13 08:12:08,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:08,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:08,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 08:12:08,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:12:08,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:12:08,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:08,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:08,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:08,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:08,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:08,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:12:08,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:08,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:08,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:08,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:08,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:08,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:08,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:08,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:08,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:12:08,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:08,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 08:12:08,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:08,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:08,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:08,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 08:12:08,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:08,763 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:12:08,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736534098] [2020-10-13 08:12:08,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:08,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:08,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39838235] [2020-10-13 08:12:08,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:08,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:08,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:08,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:08,767 INFO L87 Difference]: Start difference. First operand 430 states and 616 transitions. Second operand 5 states. [2020-10-13 08:12:10,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:10,850 INFO L93 Difference]: Finished difference Result 1256 states and 1824 transitions. [2020-10-13 08:12:10,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:10,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-13 08:12:10,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:10,856 INFO L225 Difference]: With dead ends: 1256 [2020-10-13 08:12:10,857 INFO L226 Difference]: Without dead ends: 832 [2020-10-13 08:12:10,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:12:10,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2020-10-13 08:12:10,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 814. [2020-10-13 08:12:10,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 814 states. [2020-10-13 08:12:10,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1088 transitions. [2020-10-13 08:12:10,892 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1088 transitions. Word has length 131 [2020-10-13 08:12:10,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:10,893 INFO L479 AbstractCegarLoop]: Abstraction has 814 states and 1088 transitions. [2020-10-13 08:12:10,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:10,893 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1088 transitions. [2020-10-13 08:12:10,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 08:12:10,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:10,896 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:10,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:12:10,897 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:10,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:10,897 INFO L82 PathProgramCache]: Analyzing trace with hash 97222350, now seen corresponding path program 1 times [2020-10-13 08:12:10,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:10,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807450858] [2020-10-13 08:12:10,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:10,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:11,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:11,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:12,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:12,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 08:12:12,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:12:12,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1481 [2020-10-13 08:12:12,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:12,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:12,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 08:12:12,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 08:12:12,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:12,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:12,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:12,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:12,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:12,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:12,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:12:12,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:12,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:12,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:12:12,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:12,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:12,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:12,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 08:12:12,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:12,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 08:12:12,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:12,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:12,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:12,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:12:12,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:12,705 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:12:12,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807450858] [2020-10-13 08:12:12,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:12,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:12,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211693301] [2020-10-13 08:12:12,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:12,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:12,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:12,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:12,710 INFO L87 Difference]: Start difference. First operand 814 states and 1088 transitions. Second operand 5 states. [2020-10-13 08:12:14,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:14,149 INFO L93 Difference]: Finished difference Result 1639 states and 2201 transitions. [2020-10-13 08:12:14,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:14,150 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-13 08:12:14,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:14,155 INFO L225 Difference]: With dead ends: 1639 [2020-10-13 08:12:14,155 INFO L226 Difference]: Without dead ends: 822 [2020-10-13 08:12:14,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:12:14,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2020-10-13 08:12:14,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 814. [2020-10-13 08:12:14,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 814 states. [2020-10-13 08:12:14,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1084 transitions. [2020-10-13 08:12:14,182 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1084 transitions. Word has length 132 [2020-10-13 08:12:14,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:14,182 INFO L479 AbstractCegarLoop]: Abstraction has 814 states and 1084 transitions. [2020-10-13 08:12:14,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:14,183 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1084 transitions. [2020-10-13 08:12:14,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-13 08:12:14,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:14,185 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:14,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:12:14,186 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:14,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:14,186 INFO L82 PathProgramCache]: Analyzing trace with hash 68835426, now seen corresponding path program 1 times [2020-10-13 08:12:14,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:14,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956229747] [2020-10-13 08:12:14,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:14,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:14,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:14,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:15,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:15,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:15,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:12:15,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:12:15,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1287 [2020-10-13 08:12:15,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:15,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:15,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 08:12:15,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 08:12:15,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:15,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:15,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:15,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:15,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:15,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:15,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:12:15,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:15,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:15,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:15,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:15,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:15,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:15,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:15,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:15,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 08:12:15,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:15,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 08:12:15,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:15,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:15,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:15,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 08:12:15,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:15,783 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:12:15,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956229747] [2020-10-13 08:12:15,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:15,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:15,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419167901] [2020-10-13 08:12:15,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:15,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:15,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:15,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:15,786 INFO L87 Difference]: Start difference. First operand 814 states and 1084 transitions. Second operand 5 states. [2020-10-13 08:12:17,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:17,374 INFO L93 Difference]: Finished difference Result 1647 states and 2201 transitions. [2020-10-13 08:12:17,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:17,375 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-13 08:12:17,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:17,382 INFO L225 Difference]: With dead ends: 1647 [2020-10-13 08:12:17,383 INFO L226 Difference]: Without dead ends: 822 [2020-10-13 08:12:17,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:12:17,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2020-10-13 08:12:17,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 814. [2020-10-13 08:12:17,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 814 states. [2020-10-13 08:12:17,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1078 transitions. [2020-10-13 08:12:17,417 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1078 transitions. Word has length 138 [2020-10-13 08:12:17,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:17,418 INFO L479 AbstractCegarLoop]: Abstraction has 814 states and 1078 transitions. [2020-10-13 08:12:17,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:17,418 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1078 transitions. [2020-10-13 08:12:17,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 08:12:17,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:17,421 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:17,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:12:17,422 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:17,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:17,422 INFO L82 PathProgramCache]: Analyzing trace with hash -218903526, now seen corresponding path program 1 times [2020-10-13 08:12:17,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:17,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952996894] [2020-10-13 08:12:17,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:17,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:17,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:18,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:18,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:18,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 08:12:18,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:12:18,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 941 [2020-10-13 08:12:18,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:18,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:18,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-13 08:12:18,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 08:12:18,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:18,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:18,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:18,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:18,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:18,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:18,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:12:18,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:18,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:18,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:18,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:18,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:12:18,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:18,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:18,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:18,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 08:12:18,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:18,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 08:12:18,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:18,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:18,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:18,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 08:12:18,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:12:18,644 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:12:18,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952996894] [2020-10-13 08:12:18,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:18,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:18,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285669617] [2020-10-13 08:12:18,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:18,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:18,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:18,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:18,648 INFO L87 Difference]: Start difference. First operand 814 states and 1078 transitions. Second operand 5 states. [2020-10-13 08:12:20,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:20,639 INFO L93 Difference]: Finished difference Result 1645 states and 2185 transitions. [2020-10-13 08:12:20,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:20,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-13 08:12:20,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:20,645 INFO L225 Difference]: With dead ends: 1645 [2020-10-13 08:12:20,646 INFO L226 Difference]: Without dead ends: 822 [2020-10-13 08:12:20,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:12:20,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2020-10-13 08:12:20,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 814. [2020-10-13 08:12:20,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 814 states. [2020-10-13 08:12:20,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1076 transitions. [2020-10-13 08:12:20,672 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1076 transitions. Word has length 142 [2020-10-13 08:12:20,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:20,672 INFO L479 AbstractCegarLoop]: Abstraction has 814 states and 1076 transitions. [2020-10-13 08:12:20,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:20,673 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1076 transitions. [2020-10-13 08:12:20,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-13 08:12:20,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:20,674 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:20,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:12:20,675 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:20,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:20,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1025717770, now seen corresponding path program 1 times [2020-10-13 08:12:20,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:20,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696145431] [2020-10-13 08:12:20,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:20,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:20,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:21,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:21,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 08:12:21,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:12:21,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 537 [2020-10-13 08:12:21,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:21,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:21,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 08:12:21,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:12:21,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:21,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:21,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:21,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:21,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:21,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:21,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:12:21,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:21,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:21,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:21,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:21,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:21,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:21,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:21,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:21,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:12:21,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:21,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 08:12:21,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:21,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:21,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:21,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 08:12:21,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:12:21,466 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:12:21,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696145431] [2020-10-13 08:12:21,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:21,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:12:21,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141759801] [2020-10-13 08:12:21,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:12:21,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:21,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:12:21,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:12:21,469 INFO L87 Difference]: Start difference. First operand 814 states and 1076 transitions. Second operand 6 states. [2020-10-13 08:12:24,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:24,098 INFO L93 Difference]: Finished difference Result 2607 states and 3558 transitions. [2020-10-13 08:12:24,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:12:24,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2020-10-13 08:12:24,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:24,113 INFO L225 Difference]: With dead ends: 2607 [2020-10-13 08:12:24,113 INFO L226 Difference]: Without dead ends: 1799 [2020-10-13 08:12:24,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:12:24,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2020-10-13 08:12:24,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1787. [2020-10-13 08:12:24,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1787 states. [2020-10-13 08:12:24,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1787 states to 1787 states and 2313 transitions. [2020-10-13 08:12:24,167 INFO L78 Accepts]: Start accepts. Automaton has 1787 states and 2313 transitions. Word has length 144 [2020-10-13 08:12:24,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:24,167 INFO L479 AbstractCegarLoop]: Abstraction has 1787 states and 2313 transitions. [2020-10-13 08:12:24,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:12:24,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1787 states and 2313 transitions. [2020-10-13 08:12:24,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 08:12:24,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:24,170 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:24,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:12:24,171 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:24,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:24,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1829843302, now seen corresponding path program 1 times [2020-10-13 08:12:24,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:24,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479266056] [2020-10-13 08:12:24,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:24,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:24,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:25,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:25,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 08:12:25,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:12:25,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 855 [2020-10-13 08:12:25,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:25,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:25,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 08:12:25,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:12:25,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:25,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:25,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:25,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:25,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:25,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:25,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:12:25,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:25,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:25,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:25,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:25,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:25,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:25,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:25,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:25,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:12:25,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:25,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 08:12:25,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 08:12:25,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:25,277 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:12:25,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479266056] [2020-10-13 08:12:25,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:25,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:25,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495574627] [2020-10-13 08:12:25,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:25,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:25,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:25,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:25,279 INFO L87 Difference]: Start difference. First operand 1787 states and 2313 transitions. Second operand 5 states. [2020-10-13 08:12:27,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:27,789 INFO L93 Difference]: Finished difference Result 4363 states and 5833 transitions. [2020-10-13 08:12:27,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:27,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-13 08:12:27,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:27,802 INFO L225 Difference]: With dead ends: 4363 [2020-10-13 08:12:27,802 INFO L226 Difference]: Without dead ends: 2582 [2020-10-13 08:12:27,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:12:27,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2020-10-13 08:12:27,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 2554. [2020-10-13 08:12:27,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2554 states. [2020-10-13 08:12:27,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2554 states to 2554 states and 3283 transitions. [2020-10-13 08:12:27,870 INFO L78 Accepts]: Start accepts. Automaton has 2554 states and 3283 transitions. Word has length 152 [2020-10-13 08:12:27,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:27,871 INFO L479 AbstractCegarLoop]: Abstraction has 2554 states and 3283 transitions. [2020-10-13 08:12:27,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:27,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2554 states and 3283 transitions. [2020-10-13 08:12:27,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-13 08:12:27,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:27,875 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:27,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:12:27,875 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:27,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:27,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1725579114, now seen corresponding path program 1 times [2020-10-13 08:12:27,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:27,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827870069] [2020-10-13 08:12:27,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:27,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:28,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:28,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:29,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:29,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-13 08:12:29,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:12:29,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1863 [2020-10-13 08:12:29,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:29,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:29,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-13 08:12:29,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 08:12:29,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:29,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:29,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:29,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:29,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:29,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:29,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:12:29,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:29,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:29,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:29,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:29,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:12:29,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:29,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:30,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:30,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 08:12:30,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:30,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-13 08:12:30,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:30,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:30,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:30,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 08:12:30,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:30,191 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:12:30,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827870069] [2020-10-13 08:12:30,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:30,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:30,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51488223] [2020-10-13 08:12:30,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:30,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:30,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:30,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:30,199 INFO L87 Difference]: Start difference. First operand 2554 states and 3283 transitions. Second operand 5 states. [2020-10-13 08:12:31,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:31,488 INFO L93 Difference]: Finished difference Result 5129 states and 6616 transitions. [2020-10-13 08:12:31,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:31,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 201 [2020-10-13 08:12:31,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:31,505 INFO L225 Difference]: With dead ends: 5129 [2020-10-13 08:12:31,506 INFO L226 Difference]: Without dead ends: 2568 [2020-10-13 08:12:31,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:12:31,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2020-10-13 08:12:31,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2554. [2020-10-13 08:12:31,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2554 states. [2020-10-13 08:12:31,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2554 states to 2554 states and 3277 transitions. [2020-10-13 08:12:31,628 INFO L78 Accepts]: Start accepts. Automaton has 2554 states and 3277 transitions. Word has length 201 [2020-10-13 08:12:31,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:31,629 INFO L479 AbstractCegarLoop]: Abstraction has 2554 states and 3277 transitions. [2020-10-13 08:12:31,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:31,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2554 states and 3277 transitions. [2020-10-13 08:12:31,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-13 08:12:31,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:31,633 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:31,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:12:31,634 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:31,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:31,634 INFO L82 PathProgramCache]: Analyzing trace with hash -203265131, now seen corresponding path program 1 times [2020-10-13 08:12:31,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:31,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948515687] [2020-10-13 08:12:31,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:31,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:31,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:32,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:34,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:34,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-13 08:12:34,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:12:34,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2824 [2020-10-13 08:12:34,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:34,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:34,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-13 08:12:34,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:12:34,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:34,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:34,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:34,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:34,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:34,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:34,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:12:34,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:34,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:34,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:34,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:34,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:34,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:34,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:34,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:34,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:12:34,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:34,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 08:12:34,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:34,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:34,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:34,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:34,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:34,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-13 08:12:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:34,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:34,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:34,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:12:34,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:34,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 08:12:34,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:34,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:34,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:34,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:12:34,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:34,816 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 08:12:34,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948515687] [2020-10-13 08:12:34,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:34,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:34,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225370244] [2020-10-13 08:12:34,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:34,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:34,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:34,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:34,821 INFO L87 Difference]: Start difference. First operand 2554 states and 3277 transitions. Second operand 5 states. [2020-10-13 08:12:36,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:36,979 INFO L93 Difference]: Finished difference Result 5883 states and 7774 transitions. [2020-10-13 08:12:36,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:36,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-10-13 08:12:36,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:36,993 INFO L225 Difference]: With dead ends: 5883 [2020-10-13 08:12:36,993 INFO L226 Difference]: Without dead ends: 3335 [2020-10-13 08:12:36,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:12:37,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3335 states. [2020-10-13 08:12:37,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3335 to 3313. [2020-10-13 08:12:37,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3313 states. [2020-10-13 08:12:37,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3313 states to 3313 states and 4247 transitions. [2020-10-13 08:12:37,071 INFO L78 Accepts]: Start accepts. Automaton has 3313 states and 4247 transitions. Word has length 216 [2020-10-13 08:12:37,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:37,072 INFO L479 AbstractCegarLoop]: Abstraction has 3313 states and 4247 transitions. [2020-10-13 08:12:37,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:37,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3313 states and 4247 transitions. [2020-10-13 08:12:37,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-13 08:12:37,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:37,077 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:37,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:12:37,077 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:37,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:37,078 INFO L82 PathProgramCache]: Analyzing trace with hash -315420326, now seen corresponding path program 1 times [2020-10-13 08:12:37,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:37,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575612302] [2020-10-13 08:12:37,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:37,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:37,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:37,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-13 08:12:37,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:37,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-13 08:12:37,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:37,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:12:37,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:12:37,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-13 08:12:37,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:12:37,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:37,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:37,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:37,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:37,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:37,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:12:37,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:37,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:37,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:37,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:12:37,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:37,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:37,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:37,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:37,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:12:37,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:37,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-13 08:12:37,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:37,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:37,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:12:37,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-13 08:12:37,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:37,985 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:12:37,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575612302] [2020-10-13 08:12:37,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:12:37,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 08:12:37,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327878195] [2020-10-13 08:12:37,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:12:37,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:37,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:12:37,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:12:37,988 INFO L87 Difference]: Start difference. First operand 3313 states and 4247 transitions. Second operand 7 states. [2020-10-13 08:12:40,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:40,663 INFO L93 Difference]: Finished difference Result 9182 states and 12155 transitions. [2020-10-13 08:12:40,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:12:40,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2020-10-13 08:12:40,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:40,688 INFO L225 Difference]: With dead ends: 9182 [2020-10-13 08:12:40,688 INFO L226 Difference]: Without dead ends: 5875 [2020-10-13 08:12:40,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:12:40,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5875 states. [2020-10-13 08:12:40,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5875 to 5662. [2020-10-13 08:12:40,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5662 states. [2020-10-13 08:12:40,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5662 states to 5662 states and 7140 transitions. [2020-10-13 08:12:40,870 INFO L78 Accepts]: Start accepts. Automaton has 5662 states and 7140 transitions. Word has length 224 [2020-10-13 08:12:40,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:40,870 INFO L479 AbstractCegarLoop]: Abstraction has 5662 states and 7140 transitions. [2020-10-13 08:12:40,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:12:40,871 INFO L276 IsEmpty]: Start isEmpty. Operand 5662 states and 7140 transitions. [2020-10-13 08:12:40,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-13 08:12:40,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:40,877 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:12:40,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:12:40,878 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:40,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:40,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1738084585, now seen corresponding path program 1 times [2020-10-13 08:12:40,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:40,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447461116] [2020-10-13 08:12:40,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:40,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:41,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:42,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:42,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-13 08:12:42,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:12:42,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1229 [2020-10-13 08:12:42,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:42,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:42,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 233 [2020-10-13 08:12:42,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:12:42,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:42,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:42,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:42,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:42,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:42,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:42,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:12:42,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:42,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:42,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:42,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:42,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:42,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:42,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:42,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:42,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:12:42,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:42,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 08:12:42,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:42,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:42,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:42,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:42,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:12:42,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:12:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:42,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:42,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:42,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 08:12:42,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:42,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 08:12:42,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:42,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:42,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:42,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 08:12:42,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:12:42,629 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-13 08:12:42,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447461116] [2020-10-13 08:12:42,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:42,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:42,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594056873] [2020-10-13 08:12:42,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:42,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:42,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:42,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:42,632 INFO L87 Difference]: Start difference. First operand 5662 states and 7140 transitions. Second operand 5 states. [2020-10-13 08:12:44,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:44,687 INFO L93 Difference]: Finished difference Result 13813 states and 17933 transitions. [2020-10-13 08:12:44,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:44,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 279 [2020-10-13 08:12:44,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:44,729 INFO L225 Difference]: With dead ends: 13813 [2020-10-13 08:12:44,729 INFO L226 Difference]: Without dead ends: 8345 [2020-10-13 08:12:44,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:12:44,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8345 states. [2020-10-13 08:12:44,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8345 to 8335. [2020-10-13 08:12:44,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8335 states. [2020-10-13 08:12:44,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8335 states to 8335 states and 10670 transitions. [2020-10-13 08:12:44,907 INFO L78 Accepts]: Start accepts. Automaton has 8335 states and 10670 transitions. Word has length 279 [2020-10-13 08:12:44,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:44,908 INFO L479 AbstractCegarLoop]: Abstraction has 8335 states and 10670 transitions. [2020-10-13 08:12:44,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:44,908 INFO L276 IsEmpty]: Start isEmpty. Operand 8335 states and 10670 transitions. [2020-10-13 08:12:44,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-13 08:12:44,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:44,920 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:12:44,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 08:12:44,921 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:44,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:44,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1310231216, now seen corresponding path program 1 times [2020-10-13 08:12:44,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:44,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592754952] [2020-10-13 08:12:44,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:45,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:45,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:46,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:46,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-13 08:12:46,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:12:46,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1069 [2020-10-13 08:12:46,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-13 08:12:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:12:46,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:46,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:46,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:46,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:46,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:46,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:46,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:12:46,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:46,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:46,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:46,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:46,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:46,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:46,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:46,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:46,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:12:46,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:46,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 08:12:46,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:46,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:46,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:46,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:46,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:46,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:12:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:46,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:46,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:46,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 08:12:46,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:46,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 08:12:46,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:46,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:46,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 08:12:46,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:46,370 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-13 08:12:46,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592754952] [2020-10-13 08:12:46,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:46,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:46,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861829179] [2020-10-13 08:12:46,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:46,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:46,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:46,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:46,372 INFO L87 Difference]: Start difference. First operand 8335 states and 10670 transitions. Second operand 5 states. [2020-10-13 08:12:48,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:48,421 INFO L93 Difference]: Finished difference Result 18421 states and 24129 transitions. [2020-10-13 08:12:48,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:48,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 295 [2020-10-13 08:12:48,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:48,453 INFO L225 Difference]: With dead ends: 18421 [2020-10-13 08:12:48,453 INFO L226 Difference]: Without dead ends: 10280 [2020-10-13 08:12:48,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:12:48,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10280 states. [2020-10-13 08:12:48,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10280 to 10245. [2020-10-13 08:12:48,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10245 states. [2020-10-13 08:12:48,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10245 states to 10245 states and 13059 transitions. [2020-10-13 08:12:48,663 INFO L78 Accepts]: Start accepts. Automaton has 10245 states and 13059 transitions. Word has length 295 [2020-10-13 08:12:48,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:48,664 INFO L479 AbstractCegarLoop]: Abstraction has 10245 states and 13059 transitions. [2020-10-13 08:12:48,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:48,664 INFO L276 IsEmpty]: Start isEmpty. Operand 10245 states and 13059 transitions. [2020-10-13 08:12:48,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-13 08:12:48,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:48,685 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:12:48,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 08:12:48,686 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:48,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:48,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1672142367, now seen corresponding path program 1 times [2020-10-13 08:12:48,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:48,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539519415] [2020-10-13 08:12:48,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:48,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:49,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:50,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:50,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-13 08:12:50,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:12:50,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1511 [2020-10-13 08:12:50,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:50,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 08:12:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-13 08:12:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-13 08:12:50,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:50,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:50,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:50,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:50,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:50,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:50,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:12:50,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:50,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:50,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:50,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:50,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:50,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:50,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:50,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:50,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:12:50,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:50,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 08:12:50,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:50,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:50,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:50,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 08:12:50,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:50,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:12:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:50,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:50,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:51,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:51,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:12:51,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:12:51,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-10-13 08:12:51,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:51,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 08:12:51,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:12:51,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-13 08:12:51,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:51,769 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-10-13 08:12:52,067 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 77 [2020-10-13 08:12:52,358 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 80 [2020-10-13 08:12:52,696 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 84 [2020-10-13 08:12:53,030 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 88 [2020-10-13 08:12:53,368 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 94 [2020-10-13 08:12:54,986 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 225 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:12:54,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539519415] [2020-10-13 08:12:54,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:54,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 08:12:54,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421783236] [2020-10-13 08:12:54,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 08:12:54,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:54,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 08:12:54,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-13 08:12:54,989 INFO L87 Difference]: Start difference. First operand 10245 states and 13059 transitions. Second operand 13 states. [2020-10-13 08:12:55,964 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2020-10-13 08:12:56,219 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 77 [2020-10-13 08:12:56,546 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 81 [2020-10-13 08:12:56,873 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 85 [2020-10-13 08:12:57,356 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 104 [2020-10-13 08:12:57,691 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 70 [2020-10-13 08:12:58,235 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 111 [2020-10-13 08:12:58,511 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2020-10-13 08:12:59,259 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 98 [2020-10-13 08:12:59,855 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 106 [2020-10-13 08:13:00,764 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 65 [2020-10-13 08:13:01,064 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 67 [2020-10-13 08:13:01,549 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 91 [2020-10-13 08:13:01,916 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 71 [2020-10-13 08:13:02,349 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 76 [2020-10-13 08:13:03,846 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 80 [2020-10-13 08:13:04,542 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 83 [2020-10-13 08:13:05,293 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2020-10-13 08:13:05,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:05,623 INFO L93 Difference]: Finished difference Result 20760 states and 26714 transitions. [2020-10-13 08:13:05,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 08:13:05,630 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 350 [2020-10-13 08:13:05,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:05,672 INFO L225 Difference]: With dead ends: 20760 [2020-10-13 08:13:05,672 INFO L226 Difference]: Without dead ends: 10651 [2020-10-13 08:13:05,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=286, Invalid=770, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 08:13:05,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10651 states. [2020-10-13 08:13:05,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10651 to 10625. [2020-10-13 08:13:05,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10625 states. [2020-10-13 08:13:05,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10625 states to 10625 states and 13554 transitions. [2020-10-13 08:13:05,878 INFO L78 Accepts]: Start accepts. Automaton has 10625 states and 13554 transitions. Word has length 350 [2020-10-13 08:13:05,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:05,879 INFO L479 AbstractCegarLoop]: Abstraction has 10625 states and 13554 transitions. [2020-10-13 08:13:05,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 08:13:05,879 INFO L276 IsEmpty]: Start isEmpty. Operand 10625 states and 13554 transitions. [2020-10-13 08:13:05,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-13 08:13:05,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:05,903 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:05,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 08:13:05,903 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:05,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:05,904 INFO L82 PathProgramCache]: Analyzing trace with hash -690432396, now seen corresponding path program 1 times [2020-10-13 08:13:05,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:05,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857045207] [2020-10-13 08:13:05,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:06,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:06,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:06,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:07,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:08,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:08,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-13 08:13:08,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:13:08,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2448 [2020-10-13 08:13:08,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:08,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:08,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-13 08:13:08,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 08:13:08,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:08,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:08,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:08,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:08,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:08,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:08,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:13:08,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:08,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:08,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:13:08,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:08,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:08,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:08,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:13:08,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:08,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 08:13:08,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:08,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:08,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:08,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:13:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:08,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:08,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:08,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 08:13:08,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:08,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 08:13:08,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:08,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:08,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:08,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:13:08,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:08,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-13 08:13:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:08,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:08,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:08,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:08,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 08:13:08,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:13:08,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-13 08:13:08,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:08,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:08,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:08,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 08:13:08,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:09,139 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-13 08:13:09,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857045207] [2020-10-13 08:13:09,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:09,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:13:09,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537628185] [2020-10-13 08:13:09,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:13:09,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:09,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:13:09,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:13:09,141 INFO L87 Difference]: Start difference. First operand 10625 states and 13554 transitions. Second operand 7 states. [2020-10-13 08:13:11,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:11,680 INFO L93 Difference]: Finished difference Result 23372 states and 29716 transitions. [2020-10-13 08:13:11,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:13:11,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 372 [2020-10-13 08:13:11,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:11,715 INFO L225 Difference]: With dead ends: 23372 [2020-10-13 08:13:11,715 INFO L226 Difference]: Without dead ends: 12921 [2020-10-13 08:13:11,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:13:11,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12921 states. [2020-10-13 08:13:11,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12921 to 12748. [2020-10-13 08:13:11,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12748 states. [2020-10-13 08:13:11,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12748 states to 12748 states and 16094 transitions. [2020-10-13 08:13:11,950 INFO L78 Accepts]: Start accepts. Automaton has 12748 states and 16094 transitions. Word has length 372 [2020-10-13 08:13:11,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:11,950 INFO L479 AbstractCegarLoop]: Abstraction has 12748 states and 16094 transitions. [2020-10-13 08:13:11,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:13:11,950 INFO L276 IsEmpty]: Start isEmpty. Operand 12748 states and 16094 transitions. [2020-10-13 08:13:11,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-13 08:13:11,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:11,973 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:11,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 08:13:11,974 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:11,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:11,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1595723634, now seen corresponding path program 1 times [2020-10-13 08:13:11,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:11,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140899698] [2020-10-13 08:13:11,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:12,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:12,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:12,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:12,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-13 08:13:12,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:13:12,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 705 [2020-10-13 08:13:12,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:12,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:13:12,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-13 08:13:12,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-13 08:13:12,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:12,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:12,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:12,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:12,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:12,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:12,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:13:12,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:12,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:12,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:12,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:12,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:12,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:12,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:13,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:13,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:13:13,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:13,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-13 08:13:13,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:13,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:13,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:13,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-13 08:13:13,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:13,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:13:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:13,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:13,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:13,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:13:13,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:13,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-13 08:13:13,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:13,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:13:13,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:13,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-13 08:13:13,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:13,540 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 232 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:13:13,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140899698] [2020-10-13 08:13:13,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:13,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:13:13,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860561902] [2020-10-13 08:13:13,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:13:13,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:13,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:13:13,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:13:13,542 INFO L87 Difference]: Start difference. First operand 12748 states and 16094 transitions. Second operand 8 states. [2020-10-13 08:13:16,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:16,448 INFO L93 Difference]: Finished difference Result 28011 states and 35943 transitions. [2020-10-13 08:13:16,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:13:16,449 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 371 [2020-10-13 08:13:16,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:16,493 INFO L225 Difference]: With dead ends: 28011 [2020-10-13 08:13:16,493 INFO L226 Difference]: Without dead ends: 15628 [2020-10-13 08:13:16,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:13:16,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15628 states. [2020-10-13 08:13:16,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15628 to 15224. [2020-10-13 08:13:16,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15224 states. [2020-10-13 08:13:16,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15224 states to 15224 states and 19459 transitions. [2020-10-13 08:13:16,942 INFO L78 Accepts]: Start accepts. Automaton has 15224 states and 19459 transitions. Word has length 371 [2020-10-13 08:13:16,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:16,943 INFO L479 AbstractCegarLoop]: Abstraction has 15224 states and 19459 transitions. [2020-10-13 08:13:16,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:13:16,944 INFO L276 IsEmpty]: Start isEmpty. Operand 15224 states and 19459 transitions. [2020-10-13 08:13:16,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-10-13 08:13:16,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:16,977 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:16,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 08:13:16,978 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:16,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:16,979 INFO L82 PathProgramCache]: Analyzing trace with hash -972323060, now seen corresponding path program 1 times [2020-10-13 08:13:16,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:16,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658399400] [2020-10-13 08:13:16,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:17,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:17,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:17,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:19,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:19,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 396 [2020-10-13 08:13:19,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:13:19,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2473 [2020-10-13 08:13:19,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:19,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:19,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-13 08:13:19,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:13:19,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:19,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:19,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:19,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:19,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:19,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:19,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:13:19,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:19,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:19,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:19,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:19,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:19,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:19,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:19,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:19,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:13:19,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:19,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 08:13:19,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:19,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:19,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:19,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:19,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:19,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:13:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:19,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:19,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:19,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 08:13:19,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:19,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 08:13:19,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:19,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:19,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:19,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:19,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:19,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-13 08:13:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:19,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:19,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:19,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 08:13:19,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:19,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 08:13:19,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:19,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:19,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:19,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 08:13:19,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:19,840 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 156 proven. 3 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-10-13 08:13:19,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658399400] [2020-10-13 08:13:19,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:19,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:13:19,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937814021] [2020-10-13 08:13:19,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:13:19,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:19,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:13:19,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:13:19,843 INFO L87 Difference]: Start difference. First operand 15224 states and 19459 transitions. Second operand 5 states. [2020-10-13 08:13:21,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:21,883 INFO L93 Difference]: Finished difference Result 30082 states and 38990 transitions. [2020-10-13 08:13:21,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:13:21,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 382 [2020-10-13 08:13:21,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:21,922 INFO L225 Difference]: With dead ends: 30082 [2020-10-13 08:13:21,922 INFO L226 Difference]: Without dead ends: 16948 [2020-10-13 08:13:21,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:13:21,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16948 states. [2020-10-13 08:13:22,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16948 to 16934. [2020-10-13 08:13:22,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16934 states. [2020-10-13 08:13:22,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16934 states to 16934 states and 21216 transitions. [2020-10-13 08:13:22,184 INFO L78 Accepts]: Start accepts. Automaton has 16934 states and 21216 transitions. Word has length 382 [2020-10-13 08:13:22,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:22,184 INFO L479 AbstractCegarLoop]: Abstraction has 16934 states and 21216 transitions. [2020-10-13 08:13:22,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:13:22,185 INFO L276 IsEmpty]: Start isEmpty. Operand 16934 states and 21216 transitions. [2020-10-13 08:13:22,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-10-13 08:13:22,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:22,221 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:22,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 08:13:22,221 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:22,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:22,221 INFO L82 PathProgramCache]: Analyzing trace with hash 579235467, now seen corresponding path program 1 times [2020-10-13 08:13:22,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:22,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80087054] [2020-10-13 08:13:22,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:22,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:22,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:23,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:26,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:26,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 463 [2020-10-13 08:13:26,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:13:26,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3854 [2020-10-13 08:13:26,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:26,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:26,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-13 08:13:26,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 08:13:26,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:26,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:26,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:26,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:26,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:26,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:26,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:13:26,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:26,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:26,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:26,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:26,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:26,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:26,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:26,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:26,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:13:26,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:26,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 08:13:26,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:26,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:26,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:26,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 08:13:26,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:26,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:13:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:26,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:26,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:26,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:13:26,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:26,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-13 08:13:26,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:26,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:26,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:26,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 08:13:26,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:26,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-13 08:13:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:26,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:26,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:26,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:13:26,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:26,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 08:13:26,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:26,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:26,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-13 08:13:26,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:26,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:27,756 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 263 proven. 108 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-13 08:13:27,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80087054] [2020-10-13 08:13:27,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:27,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:13:27,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644042697] [2020-10-13 08:13:27,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:13:27,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:27,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:13:27,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:13:27,766 INFO L87 Difference]: Start difference. First operand 16934 states and 21216 transitions. Second operand 7 states. [2020-10-13 08:13:30,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:30,533 INFO L93 Difference]: Finished difference Result 33712 states and 42371 transitions. [2020-10-13 08:13:30,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 08:13:30,534 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 449 [2020-10-13 08:13:30,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:30,569 INFO L225 Difference]: With dead ends: 33712 [2020-10-13 08:13:30,569 INFO L226 Difference]: Without dead ends: 17162 [2020-10-13 08:13:30,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-13 08:13:30,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17162 states. [2020-10-13 08:13:30,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17162 to 16959. [2020-10-13 08:13:30,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16959 states. [2020-10-13 08:13:30,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16959 states to 16959 states and 21086 transitions. [2020-10-13 08:13:30,836 INFO L78 Accepts]: Start accepts. Automaton has 16959 states and 21086 transitions. Word has length 449 [2020-10-13 08:13:30,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:30,837 INFO L479 AbstractCegarLoop]: Abstraction has 16959 states and 21086 transitions. [2020-10-13 08:13:30,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:13:30,837 INFO L276 IsEmpty]: Start isEmpty. Operand 16959 states and 21086 transitions. [2020-10-13 08:13:30,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2020-10-13 08:13:30,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:30,863 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:30,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 08:13:30,864 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:30,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:30,864 INFO L82 PathProgramCache]: Analyzing trace with hash 605251867, now seen corresponding path program 1 times [2020-10-13 08:13:30,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:30,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743093874] [2020-10-13 08:13:30,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:30,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:31,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:31,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:33,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:33,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 478 [2020-10-13 08:13:33,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:13:33,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2283 [2020-10-13 08:13:33,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:33,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:33,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-13 08:13:33,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 08:13:33,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:33,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:33,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:33,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:33,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:33,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:33,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:13:33,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:33,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:33,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:33,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:33,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:33,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:33,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:33,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:33,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:13:33,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:33,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 08:13:33,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:33,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:33,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:33,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 08:13:33,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:33,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:13:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:33,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:33,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:33,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:13:33,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:33,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 08:13:33,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:33,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:33,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:33,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 08:13:33,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:33,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-13 08:13:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:33,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:33,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:33,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:13:33,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:33,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 08:13:33,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:33,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:33,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-13 08:13:33,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:33,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:33,830 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 263 proven. 108 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-13 08:13:33,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743093874] [2020-10-13 08:13:33,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:33,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:13:33,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752968626] [2020-10-13 08:13:33,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:13:33,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:33,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:13:33,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:13:33,832 INFO L87 Difference]: Start difference. First operand 16959 states and 21086 transitions. Second operand 7 states. [2020-10-13 08:13:36,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:36,591 INFO L93 Difference]: Finished difference Result 32244 states and 40462 transitions. [2020-10-13 08:13:36,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:13:36,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 464 [2020-10-13 08:13:36,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:36,628 INFO L225 Difference]: With dead ends: 32244 [2020-10-13 08:13:36,629 INFO L226 Difference]: Without dead ends: 17377 [2020-10-13 08:13:36,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:13:36,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17377 states. [2020-10-13 08:13:36,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17377 to 17351. [2020-10-13 08:13:36,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17351 states. [2020-10-13 08:13:36,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17351 states to 17351 states and 21574 transitions. [2020-10-13 08:13:36,906 INFO L78 Accepts]: Start accepts. Automaton has 17351 states and 21574 transitions. Word has length 464 [2020-10-13 08:13:36,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:36,907 INFO L479 AbstractCegarLoop]: Abstraction has 17351 states and 21574 transitions. [2020-10-13 08:13:36,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:13:36,907 INFO L276 IsEmpty]: Start isEmpty. Operand 17351 states and 21574 transitions. [2020-10-13 08:13:36,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2020-10-13 08:13:36,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:36,927 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:36,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 08:13:36,927 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:36,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:36,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1234304039, now seen corresponding path program 1 times [2020-10-13 08:13:36,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:36,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354785232] [2020-10-13 08:13:36,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:37,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:37,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:37,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:39,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:40,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:42,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:42,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 478 [2020-10-13 08:13:42,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:13:42,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-13 08:13:42,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:42,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:42,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-13 08:13:42,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:13:42,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:42,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:42,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:42,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:42,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:42,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:42,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:13:42,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:42,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:42,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:42,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:42,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:42,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:42,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:42,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:13:42,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:42,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 08:13:42,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:42,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:42,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-13 08:13:42,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:13:42,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:42,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:13:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:42,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:42,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:42,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:13:42,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:42,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 08:13:42,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:42,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:42,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 08:13:42,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:42,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:42,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-13 08:13:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:42,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:42,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:42,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:13:42,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:42,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 08:13:42,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:42,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:42,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-13 08:13:42,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:42,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:42,433 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 153 proven. 4 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2020-10-13 08:13:42,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354785232] [2020-10-13 08:13:42,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:42,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:13:42,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005406745] [2020-10-13 08:13:42,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:13:42,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:42,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:13:42,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:13:42,434 INFO L87 Difference]: Start difference. First operand 17351 states and 21574 transitions. Second operand 5 states. [2020-10-13 08:13:44,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:44,275 INFO L93 Difference]: Finished difference Result 28941 states and 35943 transitions. [2020-10-13 08:13:44,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:13:44,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 464 [2020-10-13 08:13:44,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:44,295 INFO L225 Difference]: With dead ends: 28941 [2020-10-13 08:13:44,295 INFO L226 Difference]: Without dead ends: 13484 [2020-10-13 08:13:44,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:13:44,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13484 states. [2020-10-13 08:13:44,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13484 to 12146. [2020-10-13 08:13:44,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12146 states. [2020-10-13 08:13:44,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12146 states to 12146 states and 14349 transitions. [2020-10-13 08:13:44,483 INFO L78 Accepts]: Start accepts. Automaton has 12146 states and 14349 transitions. Word has length 464 [2020-10-13 08:13:44,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:44,483 INFO L479 AbstractCegarLoop]: Abstraction has 12146 states and 14349 transitions. [2020-10-13 08:13:44,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:13:44,484 INFO L276 IsEmpty]: Start isEmpty. Operand 12146 states and 14349 transitions. [2020-10-13 08:13:44,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2020-10-13 08:13:44,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:44,499 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:44,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 08:13:44,499 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:44,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:44,499 INFO L82 PathProgramCache]: Analyzing trace with hash 917013424, now seen corresponding path program 1 times [2020-10-13 08:13:44,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:44,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508330813] [2020-10-13 08:13:44,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:44,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:44,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:46,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:47,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:47,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 494 [2020-10-13 08:13:47,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:13:47,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3080 [2020-10-13 08:13:47,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:47,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:47,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-13 08:13:47,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 08:13:47,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:47,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:47,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:47,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:47,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:47,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:47,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:13:47,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:47,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:47,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:47,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:47,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:47,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:47,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:47,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:47,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:13:47,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:47,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 08:13:47,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:47,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:47,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:47,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-13 08:13:47,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:47,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:13:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:47,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:47,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:47,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:13:47,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:47,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 08:13:47,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:47,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:47,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:47,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 08:13:47,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:48,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-10-13 08:13:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:48,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:48,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:48,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:13:48,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:48,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 08:13:48,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:48,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:48,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-13 08:13:48,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:48,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:48,267 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 263 proven. 108 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-13 08:13:48,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508330813] [2020-10-13 08:13:48,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:48,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:13:48,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675738009] [2020-10-13 08:13:48,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:13:48,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:48,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:13:48,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:13:48,269 INFO L87 Difference]: Start difference. First operand 12146 states and 14349 transitions. Second operand 7 states. [2020-10-13 08:13:50,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:50,902 INFO L93 Difference]: Finished difference Result 24907 states and 29565 transitions. [2020-10-13 08:13:50,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 08:13:50,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 480 [2020-10-13 08:13:50,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:50,930 INFO L225 Difference]: With dead ends: 24907 [2020-10-13 08:13:50,930 INFO L226 Difference]: Without dead ends: 13145 [2020-10-13 08:13:50,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 08:13:50,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13145 states. [2020-10-13 08:13:51,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13145 to 12728. [2020-10-13 08:13:51,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12728 states. [2020-10-13 08:13:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12728 states to 12728 states and 14949 transitions. [2020-10-13 08:13:51,123 INFO L78 Accepts]: Start accepts. Automaton has 12728 states and 14949 transitions. Word has length 480 [2020-10-13 08:13:51,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:51,124 INFO L479 AbstractCegarLoop]: Abstraction has 12728 states and 14949 transitions. [2020-10-13 08:13:51,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:13:51,124 INFO L276 IsEmpty]: Start isEmpty. Operand 12728 states and 14949 transitions. [2020-10-13 08:13:51,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2020-10-13 08:13:51,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:51,142 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:51,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 08:13:51,142 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:51,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:51,142 INFO L82 PathProgramCache]: Analyzing trace with hash 553924398, now seen corresponding path program 1 times [2020-10-13 08:13:51,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:51,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478177692] [2020-10-13 08:13:51,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:51,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:51,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:51,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:54,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:56,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:56,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 518 [2020-10-13 08:13:56,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:13:56,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 08:13:56,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:56,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:56,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-13 08:13:56,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 08:13:56,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:56,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:56,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:56,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:56,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:56,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:56,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:13:56,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:56,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:56,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:56,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:56,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:56,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 08:13:56,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:56,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 08:13:56,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:56,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:56,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:56,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-13 08:13:56,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:56,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-13 08:13:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:56,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:56,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:56,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:13:56,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:56,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 08:13:56,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:56,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:56,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:56,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 08:13:56,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:56,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-13 08:13:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:56,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:56,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:56,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:13:56,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:56,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 08:13:56,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:56,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:56,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-13 08:13:56,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:56,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:13:57,130 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 263 proven. 108 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-10-13 08:13:57,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478177692] [2020-10-13 08:13:57,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:57,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:13:57,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670047389] [2020-10-13 08:13:57,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:13:57,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:57,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:13:57,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:13:57,132 INFO L87 Difference]: Start difference. First operand 12728 states and 14949 transitions. Second operand 7 states. [2020-10-13 08:13:59,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:59,536 INFO L93 Difference]: Finished difference Result 25664 states and 30165 transitions. [2020-10-13 08:13:59,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:13:59,539 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 504 [2020-10-13 08:13:59,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:59,557 INFO L225 Difference]: With dead ends: 25664 [2020-10-13 08:13:59,557 INFO L226 Difference]: Without dead ends: 13318 [2020-10-13 08:13:59,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:13:59,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13318 states. [2020-10-13 08:13:59,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13318 to 12542. [2020-10-13 08:13:59,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12542 states. [2020-10-13 08:13:59,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12542 states to 12542 states and 14706 transitions. [2020-10-13 08:13:59,736 INFO L78 Accepts]: Start accepts. Automaton has 12542 states and 14706 transitions. Word has length 504 [2020-10-13 08:13:59,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:59,737 INFO L479 AbstractCegarLoop]: Abstraction has 12542 states and 14706 transitions. [2020-10-13 08:13:59,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:13:59,737 INFO L276 IsEmpty]: Start isEmpty. Operand 12542 states and 14706 transitions. [2020-10-13 08:13:59,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2020-10-13 08:13:59,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:59,754 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:59,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 08:13:59,755 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:59,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:59,755 INFO L82 PathProgramCache]: Analyzing trace with hash -36597997, now seen corresponding path program 1 times [2020-10-13 08:13:59,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:59,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155063463] [2020-10-13 08:13:59,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:59,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:00,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:00,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:01,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:02,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:04,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:04,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 549 [2020-10-13 08:14:04,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:14:04,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 08:14:04,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:04,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:04,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-13 08:14:04,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 08:14:04,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:04,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:14:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:04,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:04,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:04,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:14:04,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:04,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:14:04,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:04,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:04,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:04,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:04,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:04,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:14:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:05,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:05,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:05,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:14:05,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:05,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:14:05,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:05,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:05,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:05,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:05,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:05,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:14:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:05,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:05,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:05,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:14:05,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:05,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 08:14:05,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:05,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:05,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:05,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:14:05,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:05,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 08:14:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:05,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:05,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:05,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:05,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:14:05,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:14:05,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-13 08:14:05,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:05,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:05,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:14:05,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 08:14:05,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:05,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-10-13 08:14:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:05,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:05,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:05,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:14:05,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:05,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 08:14:05,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:05,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:05,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-13 08:14:05,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:05,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:06,290 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 389 proven. 108 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-10-13 08:14:06,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155063463] [2020-10-13 08:14:06,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:14:06,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:14:06,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910369822] [2020-10-13 08:14:06,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:14:06,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:14:06,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:14:06,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:14:06,292 INFO L87 Difference]: Start difference. First operand 12542 states and 14706 transitions. Second operand 6 states. [2020-10-13 08:14:08,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:14:08,226 INFO L93 Difference]: Finished difference Result 23059 states and 27083 transitions. [2020-10-13 08:14:08,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:14:08,227 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 533 [2020-10-13 08:14:08,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:14:08,246 INFO L225 Difference]: With dead ends: 23059 [2020-10-13 08:14:08,246 INFO L226 Difference]: Without dead ends: 12585 [2020-10-13 08:14:08,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:14:08,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12585 states. [2020-10-13 08:14:08,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12585 to 12542. [2020-10-13 08:14:08,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12542 states. [2020-10-13 08:14:08,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12542 states to 12542 states and 14702 transitions. [2020-10-13 08:14:08,427 INFO L78 Accepts]: Start accepts. Automaton has 12542 states and 14702 transitions. Word has length 533 [2020-10-13 08:14:08,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:14:08,428 INFO L479 AbstractCegarLoop]: Abstraction has 12542 states and 14702 transitions. [2020-10-13 08:14:08,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:14:08,428 INFO L276 IsEmpty]: Start isEmpty. Operand 12542 states and 14702 transitions. [2020-10-13 08:14:08,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2020-10-13 08:14:08,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:08,448 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-13 08:14:08,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 08:14:08,448 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:08,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:08,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1534107135, now seen corresponding path program 1 times [2020-10-13 08:14:08,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:08,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003419917] [2020-10-13 08:14:08,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:08,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:08,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:09,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:10,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:13,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:13,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 555 [2020-10-13 08:14:13,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:14:13,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4791 [2020-10-13 08:14:13,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:13,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:13,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-13 08:14:13,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 08:14:13,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:13,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:14:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:13,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:13,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:13,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:14:13,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:13,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:14:13,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:13,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:13,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:13,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:13,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:13,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:14:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:13,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:13,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:13,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:14:13,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:13,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 08:14:13,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:13,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:13,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:13,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 08:14:13,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:13,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:14:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:13,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:13,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:13,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:14:13,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:13,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 08:14:13,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:13,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:13,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:14:13,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 08:14:13,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:13,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-13 08:14:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:13,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:13,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:13,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:14:13,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:13,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 08:14:13,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:13,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:13,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 08:14:13,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:13,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:13,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-10-13 08:14:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:13,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:13,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:13,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:14:13,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:13,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 08:14:13,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:13,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:13,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-13 08:14:13,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:13,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:14,075 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 284 proven. 146 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2020-10-13 08:14:14,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003419917] [2020-10-13 08:14:14,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:14:14,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:14:14,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018373514] [2020-10-13 08:14:14,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:14:14,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:14:14,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:14:14,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:14:14,077 INFO L87 Difference]: Start difference. First operand 12542 states and 14702 transitions. Second operand 7 states. [2020-10-13 08:14:17,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:14:17,776 INFO L93 Difference]: Finished difference Result 28149 states and 33243 transitions. [2020-10-13 08:14:17,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:14:17,777 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 539 [2020-10-13 08:14:17,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:14:17,798 INFO L225 Difference]: With dead ends: 28149 [2020-10-13 08:14:17,798 INFO L226 Difference]: Without dead ends: 15801 [2020-10-13 08:14:17,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:14:17,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15801 states. [2020-10-13 08:14:17,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15801 to 15592. [2020-10-13 08:14:17,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15592 states. [2020-10-13 08:14:18,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15592 states to 15592 states and 18137 transitions. [2020-10-13 08:14:18,023 INFO L78 Accepts]: Start accepts. Automaton has 15592 states and 18137 transitions. Word has length 539 [2020-10-13 08:14:18,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:14:18,024 INFO L479 AbstractCegarLoop]: Abstraction has 15592 states and 18137 transitions. [2020-10-13 08:14:18,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:14:18,024 INFO L276 IsEmpty]: Start isEmpty. Operand 15592 states and 18137 transitions. [2020-10-13 08:14:18,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2020-10-13 08:14:18,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:18,050 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:14:18,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 08:14:18,051 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:18,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:18,051 INFO L82 PathProgramCache]: Analyzing trace with hash -324483794, now seen corresponding path program 1 times [2020-10-13 08:14:18,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:18,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813335800] [2020-10-13 08:14:18,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:18,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:18,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:19,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:19,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:23,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:23,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 573 [2020-10-13 08:14:23,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:14:23,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 08:14:23,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:23,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:23,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-13 08:14:23,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 08:14:23,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:14:23,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:14:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:23,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:23,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:23,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:14:23,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:23,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:14:23,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:23,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:23,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:23,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:23,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:23,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:14:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:23,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:23,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:23,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:14:23,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:23,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 08:14:23,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:23,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:23,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:23,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-13 08:14:23,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:23,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:14:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:23,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:23,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:23,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 08:14:23,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:23,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 08:14:23,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:23,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:23,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:14:23,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 08:14:23,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:23,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-13 08:14:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:23,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:23,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:23,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:14:23,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:23,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 08:14:23,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:23,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:23,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 08:14:23,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:23,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:23,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-10-13 08:14:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:23,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:23,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:23,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:14:23,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:23,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 08:14:23,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:23,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:23,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-13 08:14:23,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:23,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:24,050 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 286 proven. 150 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-13 08:14:24,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813335800] [2020-10-13 08:14:24,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:14:24,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:14:24,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81088940] [2020-10-13 08:14:24,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:14:24,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:14:24,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:14:24,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:14:24,052 INFO L87 Difference]: Start difference. First operand 15592 states and 18137 transitions. Second operand 7 states. [2020-10-13 08:14:27,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:14:27,004 INFO L93 Difference]: Finished difference Result 31015 states and 36116 transitions. [2020-10-13 08:14:27,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:14:27,005 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 557 [2020-10-13 08:14:27,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:14:27,027 INFO L225 Difference]: With dead ends: 31015 [2020-10-13 08:14:27,027 INFO L226 Difference]: Without dead ends: 15617 [2020-10-13 08:14:27,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 08:14:27,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15617 states. [2020-10-13 08:14:27,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15617 to 15592. [2020-10-13 08:14:27,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15592 states. [2020-10-13 08:14:27,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15592 states to 15592 states and 18090 transitions. [2020-10-13 08:14:27,200 INFO L78 Accepts]: Start accepts. Automaton has 15592 states and 18090 transitions. Word has length 557 [2020-10-13 08:14:27,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:14:27,200 INFO L479 AbstractCegarLoop]: Abstraction has 15592 states and 18090 transitions. [2020-10-13 08:14:27,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:14:27,200 INFO L276 IsEmpty]: Start isEmpty. Operand 15592 states and 18090 transitions. [2020-10-13 08:14:27,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2020-10-13 08:14:27,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:27,222 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:14:27,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 08:14:27,222 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:27,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:27,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1899058017, now seen corresponding path program 1 times [2020-10-13 08:14:27,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:27,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978784328] [2020-10-13 08:14:27,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:27,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:27,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:28,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:30,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:30,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 582 [2020-10-13 08:14:30,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:14:30,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3119 [2020-10-13 08:14:30,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:30,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:30,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-13 08:14:30,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 08:14:30,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:30,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:14:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:30,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:30,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:30,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:14:30,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:30,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:14:30,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:30,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:30,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:30,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:30,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:30,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:14:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:30,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:30,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:30,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:14:30,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:30,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-13 08:14:30,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:30,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:30,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:30,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 08:14:30,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:14:30,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:14:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:30,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:30,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:30,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:14:30,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:30,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-13 08:14:30,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:14:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 08:14:30,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:14:31,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-13 08:14:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:31,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:31,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:31,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:14:31,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:31,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 08:14:31,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:31,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:31,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 08:14:31,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:31,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:31,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-10-13 08:14:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:31,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:31,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:31,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:14:31,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:31,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 08:14:31,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:31,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:31,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-13 08:14:31,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:31,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:14:31,457 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 311 proven. 200 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2020-10-13 08:14:31,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978784328] [2020-10-13 08:14:31,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:14:31,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:14:31,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671901509] [2020-10-13 08:14:31,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:14:31,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:14:31,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:14:31,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:14:31,459 INFO L87 Difference]: Start difference. First operand 15592 states and 18090 transitions. Second operand 7 states. [2020-10-13 08:14:34,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:14:34,288 INFO L93 Difference]: Finished difference Result 29950 states and 35218 transitions. [2020-10-13 08:14:34,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:14:34,290 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 566 [2020-10-13 08:14:34,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:14:34,313 INFO L225 Difference]: With dead ends: 29950 [2020-10-13 08:14:34,313 INFO L226 Difference]: Without dead ends: 14552 [2020-10-13 08:14:34,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:14:34,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14552 states. [2020-10-13 08:14:34,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14552 to 14440. [2020-10-13 08:14:34,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14440 states. [2020-10-13 08:14:34,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14440 states to 14440 states and 16593 transitions. [2020-10-13 08:14:34,516 INFO L78 Accepts]: Start accepts. Automaton has 14440 states and 16593 transitions. Word has length 566 [2020-10-13 08:14:34,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:14:34,516 INFO L479 AbstractCegarLoop]: Abstraction has 14440 states and 16593 transitions. [2020-10-13 08:14:34,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:14:34,516 INFO L276 IsEmpty]: Start isEmpty. Operand 14440 states and 16593 transitions. [2020-10-13 08:14:34,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2020-10-13 08:14:34,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:34,542 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-13 08:14:34,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 08:14:34,543 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:34,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:34,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1601612735, now seen corresponding path program 1 times [2020-10-13 08:14:34,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:34,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294817801] [2020-10-13 08:14:34,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:34,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:34,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:35,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:36,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:39,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:39,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 587 [2020-10-13 08:14:39,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:14:39,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 08:14:39,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:39,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:39,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-13 08:14:39,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 08:14:39,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:39,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:14:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:39,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:39,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:39,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:14:39,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:39,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:14:39,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:39,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:39,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:39,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:39,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:39,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:14:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:39,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:39,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:39,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:14:39,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:39,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 08:14:39,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:39,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:39,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:39,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 08:14:39,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:39,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:14:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:39,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:39,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:39,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 08:14:39,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:39,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 08:14:39,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:39,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:39,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:14:39,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 08:14:39,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:39,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-13 08:14:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:39,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:40,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:40,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:14:40,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:40,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 08:14:40,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:40,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:40,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 08:14:40,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:40,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:40,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-13 08:14:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:40,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:40,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:40,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:14:40,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:40,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 08:14:40,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:40,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:40,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-13 08:14:40,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:40,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:40,390 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 316 proven. 210 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2020-10-13 08:14:40,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294817801] [2020-10-13 08:14:40,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:14:40,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:14:40,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789804765] [2020-10-13 08:14:40,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:14:40,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:14:40,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:14:40,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:14:40,392 INFO L87 Difference]: Start difference. First operand 14440 states and 16593 transitions. Second operand 7 states. [2020-10-13 08:14:43,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:14:43,293 INFO L93 Difference]: Finished difference Result 31558 states and 36239 transitions. [2020-10-13 08:14:43,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:14:43,294 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 571 [2020-10-13 08:14:43,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:14:43,323 INFO L225 Difference]: With dead ends: 31558 [2020-10-13 08:14:43,323 INFO L226 Difference]: Without dead ends: 17312 [2020-10-13 08:14:43,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:14:43,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17312 states. [2020-10-13 08:14:43,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17312 to 16908. [2020-10-13 08:14:43,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16908 states. [2020-10-13 08:14:43,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16908 states to 16908 states and 19239 transitions. [2020-10-13 08:14:43,518 INFO L78 Accepts]: Start accepts. Automaton has 16908 states and 19239 transitions. Word has length 571 [2020-10-13 08:14:43,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:14:43,519 INFO L479 AbstractCegarLoop]: Abstraction has 16908 states and 19239 transitions. [2020-10-13 08:14:43,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:14:43,519 INFO L276 IsEmpty]: Start isEmpty. Operand 16908 states and 19239 transitions. [2020-10-13 08:14:43,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2020-10-13 08:14:43,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:43,538 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:14:43,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 08:14:43,539 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:43,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:43,539 INFO L82 PathProgramCache]: Analyzing trace with hash -401118194, now seen corresponding path program 1 times [2020-10-13 08:14:43,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:43,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075785666] [2020-10-13 08:14:43,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:43,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:43,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:44,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:44,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:47,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:47,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 595 [2020-10-13 08:14:47,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:14:47,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3900 [2020-10-13 08:14:47,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:47,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-13 08:14:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 08:14:47,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:47,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:14:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:47,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:47,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:47,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:14:47,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:47,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:14:47,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:47,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:47,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:47,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:14:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:47,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:47,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:47,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:14:47,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:47,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 08:14:47,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:47,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:47,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:47,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:47,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:47,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:14:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:47,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:47,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:47,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 08:14:47,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:47,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 08:14:47,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:47,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:47,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:47,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 08:14:47,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:47,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-13 08:14:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:47,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:47,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:48,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:48,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:14:48,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:14:48,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-13 08:14:48,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:48,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:48,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:14:48,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 08:14:48,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:48,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-10-13 08:14:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:48,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:48,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:48,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:14:48,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:48,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 08:14:48,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:48,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:48,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-13 08:14:48,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:48,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:48,702 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 429 proven. 108 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2020-10-13 08:14:48,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075785666] [2020-10-13 08:14:48,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:14:48,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:14:48,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227786734] [2020-10-13 08:14:48,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:14:48,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:14:48,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:14:48,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:14:48,703 INFO L87 Difference]: Start difference. First operand 16908 states and 19239 transitions. Second operand 6 states. [2020-10-13 08:14:50,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:14:50,646 INFO L93 Difference]: Finished difference Result 31013 states and 35370 transitions. [2020-10-13 08:14:50,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:14:50,647 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 579 [2020-10-13 08:14:50,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:14:50,676 INFO L225 Difference]: With dead ends: 31013 [2020-10-13 08:14:50,676 INFO L226 Difference]: Without dead ends: 16749 [2020-10-13 08:14:50,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:14:50,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16749 states. [2020-10-13 08:14:50,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16749 to 16718. [2020-10-13 08:14:50,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16718 states. [2020-10-13 08:14:50,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16718 states to 16718 states and 19018 transitions. [2020-10-13 08:14:50,854 INFO L78 Accepts]: Start accepts. Automaton has 16718 states and 19018 transitions. Word has length 579 [2020-10-13 08:14:50,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:14:50,854 INFO L479 AbstractCegarLoop]: Abstraction has 16718 states and 19018 transitions. [2020-10-13 08:14:50,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:14:50,854 INFO L276 IsEmpty]: Start isEmpty. Operand 16718 states and 19018 transitions. [2020-10-13 08:14:50,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2020-10-13 08:14:50,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:50,868 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:14:50,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 08:14:50,868 INFO L427 AbstractCegarLoop]: === Iteration 29 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:50,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:50,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1698557119, now seen corresponding path program 1 times [2020-10-13 08:14:50,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:50,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600630609] [2020-10-13 08:14:50,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:51,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:51,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:51,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:54,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:54,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 611 [2020-10-13 08:14:54,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:14:54,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3503 [2020-10-13 08:14:54,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:54,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:54,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 274 [2020-10-13 08:14:54,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 08:14:54,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:54,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:14:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:54,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:54,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:54,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:14:54,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:54,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:14:54,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:54,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:54,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:54,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:54,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:54,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:14:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:54,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:54,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:54,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 08:14:54,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:54,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 08:14:54,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:54,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:54,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:54,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:54,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:54,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-13 08:14:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:54,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:54,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:54,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 08:14:54,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:54,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 08:14:54,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:54,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:54,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:54,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 08:14:54,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:54,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-10-13 08:14:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:54,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:54,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:54,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:14:54,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:54,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 08:14:54,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:54,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:54,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:14:54,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 08:14:54,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:55,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2020-10-13 08:14:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:55,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:55,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:55,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:14:55,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:55,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 08:14:55,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:55,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:55,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-13 08:14:55,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:55,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:55,408 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 397 proven. 108 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2020-10-13 08:14:55,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600630609] [2020-10-13 08:14:55,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:14:55,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:14:55,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529014920] [2020-10-13 08:14:55,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:14:55,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:14:55,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:14:55,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:14:55,410 INFO L87 Difference]: Start difference. First operand 16718 states and 19018 transitions. Second operand 7 states. [2020-10-13 08:14:58,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:14:58,009 INFO L93 Difference]: Finished difference Result 30813 states and 35116 transitions. [2020-10-13 08:14:58,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:14:58,010 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 595 [2020-10-13 08:14:58,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:14:58,032 INFO L225 Difference]: With dead ends: 30813 [2020-10-13 08:14:58,032 INFO L226 Difference]: Without dead ends: 16549 [2020-10-13 08:14:58,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 08:14:58,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16549 states. [2020-10-13 08:14:58,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16549 to 15580. [2020-10-13 08:14:58,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15580 states. [2020-10-13 08:14:58,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15580 states to 15580 states and 17675 transitions. [2020-10-13 08:14:58,197 INFO L78 Accepts]: Start accepts. Automaton has 15580 states and 17675 transitions. Word has length 595 [2020-10-13 08:14:58,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:14:58,197 INFO L479 AbstractCegarLoop]: Abstraction has 15580 states and 17675 transitions. [2020-10-13 08:14:58,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:14:58,197 INFO L276 IsEmpty]: Start isEmpty. Operand 15580 states and 17675 transitions. [2020-10-13 08:14:58,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2020-10-13 08:14:58,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:58,211 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:14:58,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 08:14:58,212 INFO L427 AbstractCegarLoop]: === Iteration 30 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:58,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:58,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1047548546, now seen corresponding path program 1 times [2020-10-13 08:14:58,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:58,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917775238] [2020-10-13 08:14:58,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:58,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:58,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:58,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:59,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:01,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:01,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 619 [2020-10-13 08:15:01,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:15:01,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2928 [2020-10-13 08:15:01,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:01,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:15:01,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-13 08:15:01,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 08:15:01,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:01,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:15:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:01,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:01,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:01,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:15:01,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:01,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:15:01,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:01,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:01,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:01,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:01,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:01,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:15:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:01,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:01,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:01,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:15:01,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:01,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:15:01,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:01,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:01,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:01,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:01,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:01,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:15:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:01,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:01,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:01,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 08:15:01,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:01,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 08:15:01,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:01,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:15:01,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:01,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-13 08:15:01,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:01,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-13 08:15:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:01,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:01,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:01,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:01,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:15:01,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:15:01,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-13 08:15:01,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:01,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:15:01,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:15:01,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 08:15:01,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:01,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2020-10-13 08:15:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:01,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:01,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:01,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:15:01,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:01,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 08:15:01,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:01,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:01,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-13 08:15:01,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:01,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:02,420 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 429 proven. 108 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2020-10-13 08:15:02,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917775238] [2020-10-13 08:15:02,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:15:02,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:15:02,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721425585] [2020-10-13 08:15:02,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:15:02,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:15:02,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:15:02,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:15:02,423 INFO L87 Difference]: Start difference. First operand 15580 states and 17675 transitions. Second operand 6 states. [2020-10-13 08:15:04,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:15:04,613 INFO L93 Difference]: Finished difference Result 28741 states and 32676 transitions. [2020-10-13 08:15:04,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:15:04,614 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 603 [2020-10-13 08:15:04,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:15:04,637 INFO L225 Difference]: With dead ends: 28741 [2020-10-13 08:15:04,637 INFO L226 Difference]: Without dead ends: 15612 [2020-10-13 08:15:04,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:15:04,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15612 states. [2020-10-13 08:15:04,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15612 to 15578. [2020-10-13 08:15:04,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15578 states. [2020-10-13 08:15:04,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15578 states to 15578 states and 17658 transitions. [2020-10-13 08:15:04,814 INFO L78 Accepts]: Start accepts. Automaton has 15578 states and 17658 transitions. Word has length 603 [2020-10-13 08:15:04,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:15:04,814 INFO L479 AbstractCegarLoop]: Abstraction has 15578 states and 17658 transitions. [2020-10-13 08:15:04,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:15:04,814 INFO L276 IsEmpty]: Start isEmpty. Operand 15578 states and 17658 transitions. [2020-10-13 08:15:04,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2020-10-13 08:15:04,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:15:04,828 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:15:04,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 08:15:04,828 INFO L427 AbstractCegarLoop]: === Iteration 31 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:15:04,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:15:04,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1753391170, now seen corresponding path program 1 times [2020-10-13 08:15:04,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:15:04,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90125530] [2020-10-13 08:15:04,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:15:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:04,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:05,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:07,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:09,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:09,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:09,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 638 [2020-10-13 08:15:09,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:15:09,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-13 08:15:09,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:09,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:15:09,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-13 08:15:09,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 08:15:09,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:10,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:15:10,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:10,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:10,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:10,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:15:10,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:10,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:15:10,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:10,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:10,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:10,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:10,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:10,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:15:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:10,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:10,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:10,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:15:10,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:10,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:15:10,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:10,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:10,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:10,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:10,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:10,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:15:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:10,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:10,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:10,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:15:10,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:10,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:15:10,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:10,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:10,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:10,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:10,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:10,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-13 08:15:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:10,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:10,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:10,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:15:10,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:10,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 08:15:10,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:10,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:15:10,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:10,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:15:10,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:10,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-13 08:15:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:10,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:10,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:10,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:15:10,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:10,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 08:15:10,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:10,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:15:10,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:15:10,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 08:15:10,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:10,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-13 08:15:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:10,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:10,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:10,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:15:10,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:10,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 08:15:10,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:10,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:10,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-13 08:15:10,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:10,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:10,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 538 proven. 108 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2020-10-13 08:15:10,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90125530] [2020-10-13 08:15:10,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:15:10,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:15:10,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273007292] [2020-10-13 08:15:10,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:15:10,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:15:10,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:15:10,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:15:10,718 INFO L87 Difference]: Start difference. First operand 15578 states and 17658 transitions. Second operand 7 states. [2020-10-13 08:15:13,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:15:13,175 INFO L93 Difference]: Finished difference Result 29671 states and 33654 transitions. [2020-10-13 08:15:13,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 08:15:13,176 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 620 [2020-10-13 08:15:13,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:15:13,199 INFO L225 Difference]: With dead ends: 29671 [2020-10-13 08:15:13,199 INFO L226 Difference]: Without dead ends: 16561 [2020-10-13 08:15:13,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-13 08:15:13,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16561 states. [2020-10-13 08:15:13,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16561 to 16158. [2020-10-13 08:15:13,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16158 states. [2020-10-13 08:15:13,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16158 states to 16158 states and 18258 transitions. [2020-10-13 08:15:13,375 INFO L78 Accepts]: Start accepts. Automaton has 16158 states and 18258 transitions. Word has length 620 [2020-10-13 08:15:13,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:15:13,376 INFO L479 AbstractCegarLoop]: Abstraction has 16158 states and 18258 transitions. [2020-10-13 08:15:13,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:15:13,376 INFO L276 IsEmpty]: Start isEmpty. Operand 16158 states and 18258 transitions. [2020-10-13 08:15:13,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2020-10-13 08:15:13,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:15:13,390 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:15:13,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 08:15:13,391 INFO L427 AbstractCegarLoop]: === Iteration 32 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:15:13,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:15:13,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1111170021, now seen corresponding path program 1 times [2020-10-13 08:15:13,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:15:13,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604997524] [2020-10-13 08:15:13,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:15:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:13,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:13,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:14,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:16,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:16,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 655 [2020-10-13 08:15:16,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:15:16,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3504 [2020-10-13 08:15:16,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:16,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:15:16,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-13 08:15:16,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 08:15:16,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:17,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:15:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:17,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:17,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:17,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:15:17,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:17,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:15:17,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:17,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:17,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:17,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:17,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:17,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:15:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:17,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:17,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:17,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:15:17,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:17,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:15:17,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:17,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:17,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:15:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:17,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:17,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:17,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:15:17,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:17,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 08:15:17,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:17,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:17,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:17,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:17,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:17,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-13 08:15:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:17,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:17,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:17,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 08:15:17,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:17,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 08:15:17,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:17,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:15:17,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:17,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 08:15:17,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:17,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-13 08:15:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:17,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:17,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:17,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:15:17,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:17,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 08:15:17,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:17,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:15:17,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:15:17,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 08:15:17,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:17,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-10-13 08:15:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:17,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:17,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:17,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:15:17,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:17,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 08:15:17,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:17,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:17,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-13 08:15:17,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:17,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:17,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1219 backedges. 555 proven. 108 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2020-10-13 08:15:17,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604997524] [2020-10-13 08:15:17,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:15:17,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:15:17,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97207892] [2020-10-13 08:15:17,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:15:17,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:15:17,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:15:17,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:15:17,871 INFO L87 Difference]: Start difference. First operand 16158 states and 18258 transitions. Second operand 7 states. [2020-10-13 08:15:20,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:15:20,677 INFO L93 Difference]: Finished difference Result 30448 states and 34439 transitions. [2020-10-13 08:15:20,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:15:20,678 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 637 [2020-10-13 08:15:20,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:15:20,699 INFO L225 Difference]: With dead ends: 30448 [2020-10-13 08:15:20,700 INFO L226 Difference]: Without dead ends: 16748 [2020-10-13 08:15:20,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:15:20,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16748 states. [2020-10-13 08:15:20,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16748 to 16342. [2020-10-13 08:15:20,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16342 states. [2020-10-13 08:15:20,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16342 states to 16342 states and 18433 transitions. [2020-10-13 08:15:20,884 INFO L78 Accepts]: Start accepts. Automaton has 16342 states and 18433 transitions. Word has length 637 [2020-10-13 08:15:20,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:15:20,885 INFO L479 AbstractCegarLoop]: Abstraction has 16342 states and 18433 transitions. [2020-10-13 08:15:20,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:15:20,885 INFO L276 IsEmpty]: Start isEmpty. Operand 16342 states and 18433 transitions. [2020-10-13 08:15:20,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2020-10-13 08:15:20,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:15:20,902 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:15:20,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 08:15:20,902 INFO L427 AbstractCegarLoop]: === Iteration 33 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:15:20,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:15:20,902 INFO L82 PathProgramCache]: Analyzing trace with hash 290525189, now seen corresponding path program 1 times [2020-10-13 08:15:20,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:15:20,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918610855] [2020-10-13 08:15:20,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:15:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:21,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:21,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:22,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:22,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 679 [2020-10-13 08:15:22,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:15:22,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1894 [2020-10-13 08:15:22,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:22,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:15:22,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 453 [2020-10-13 08:15:22,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-13 08:15:22,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:23,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:15:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:23,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:23,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:23,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:15:23,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:23,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:15:23,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:23,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:23,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:23,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:23,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:23,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:15:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:23,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:23,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:23,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 08:15:23,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:23,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 08:15:23,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:23,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:23,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:23,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:23,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:23,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-13 08:15:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:23,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:23,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:23,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 08:15:23,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:23,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:15:23,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:23,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:23,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:23,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:23,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:23,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-13 08:15:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:23,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:23,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:23,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:15:23,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:23,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 08:15:23,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:23,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:15:23,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:23,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 08:15:23,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:23,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-10-13 08:15:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:23,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:23,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:23,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:15:23,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:23,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-13 08:15:23,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:23,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:15:23,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:15:23,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-13 08:15:23,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:23,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 623 proven. 18 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2020-10-13 08:15:23,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918610855] [2020-10-13 08:15:23,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:15:23,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:15:23,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258006192] [2020-10-13 08:15:23,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:15:23,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:15:23,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:15:23,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:15:23,859 INFO L87 Difference]: Start difference. First operand 16342 states and 18433 transitions. Second operand 8 states. [2020-10-13 08:15:26,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:15:26,711 INFO L93 Difference]: Finished difference Result 29881 states and 33708 transitions. [2020-10-13 08:15:26,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:15:26,713 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 663 [2020-10-13 08:15:26,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:15:26,714 INFO L225 Difference]: With dead ends: 29881 [2020-10-13 08:15:26,714 INFO L226 Difference]: Without dead ends: 0 [2020-10-13 08:15:26,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:15:26,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-13 08:15:26,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-13 08:15:26,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-13 08:15:26,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-13 08:15:26,741 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 663 [2020-10-13 08:15:26,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:15:26,742 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-13 08:15:26,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:15:26,742 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-13 08:15:26,742 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-13 08:15:26,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 08:15:26,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-13 08:15:29,356 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 529 DAG size of output: 467 [2020-10-13 08:15:30,169 WARN L193 SmtUtils]: Spent 808.00 ms on a formula simplification. DAG size of input: 523 DAG size of output: 477 [2020-10-13 08:15:30,348 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 33 [2020-10-13 08:15:33,975 WARN L193 SmtUtils]: Spent 3.60 s on a formula simplification. DAG size of input: 603 DAG size of output: 139 [2020-10-13 08:15:37,032 WARN L193 SmtUtils]: Spent 3.02 s on a formula simplification. DAG size of input: 469 DAG size of output: 93