/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:09:29,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:09:29,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:09:29,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:09:29,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:09:29,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:09:29,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:09:29,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:09:29,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:09:29,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:09:29,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:09:29,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:09:29,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:09:29,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:09:29,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:09:29,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:09:29,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:09:29,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:09:29,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:09:29,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:09:29,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:09:29,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:09:29,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:09:29,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:09:29,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:09:29,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:09:29,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:09:29,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:09:29,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:09:29,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:09:29,545 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:09:29,546 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:09:29,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:09:29,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:09:29,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:09:29,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:09:29,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:09:29,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:09:29,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:09:29,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:09:29,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:09:29,552 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 13:09:29,576 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:09:29,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:09:29,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:09:29,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:09:29,578 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:09:29,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:09:29,578 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:09:29,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:09:29,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:09:29,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:09:29,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:09:29,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:09:29,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:09:29,579 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:09:29,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:09:29,580 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:09:29,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:09:29,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:09:29,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:09:29,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:09:29,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:09:29,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:09:29,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:09:29,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:09:29,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:09:29,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:09:29,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:09:29,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:09:29,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:09:29,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 13:09:29,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:09:29,888 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:09:29,892 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:09:29,894 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:09:29,894 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:09:29,895 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label19.c [2020-10-12 13:09:29,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/992ac6c32/6cd67baa19e7458cba65c9460383531a/FLAG397009777 [2020-10-12 13:09:30,624 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:09:30,625 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label19.c [2020-10-12 13:09:30,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/992ac6c32/6cd67baa19e7458cba65c9460383531a/FLAG397009777 [2020-10-12 13:09:30,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/992ac6c32/6cd67baa19e7458cba65c9460383531a [2020-10-12 13:09:30,872 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:09:30,874 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:09:30,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:09:30,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:09:30,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:09:30,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:09:30" (1/1) ... [2020-10-12 13:09:30,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f0f39f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:09:30, skipping insertion in model container [2020-10-12 13:09:30,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:09:30" (1/1) ... [2020-10-12 13:09:30,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:09:30,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:09:31,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:09:31,626 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:09:31,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:09:31,857 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:09:31,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:09:31 WrapperNode [2020-10-12 13:09:31,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:09:31,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:09:31,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:09:31,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:09:31,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:09:31" (1/1) ... [2020-10-12 13:09:31,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:09:31" (1/1) ... [2020-10-12 13:09:31,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:09:31" (1/1) ... [2020-10-12 13:09:31,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:09:31" (1/1) ... [2020-10-12 13:09:31,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:09:31" (1/1) ... [2020-10-12 13:09:31,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:09:31" (1/1) ... [2020-10-12 13:09:31,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:09:31" (1/1) ... [2020-10-12 13:09:32,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:09:32,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:09:32,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:09:32,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:09:32,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:09:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:09:32,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:09:32,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:09:32,141 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:09:32,142 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:09:32,142 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:09:32,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:09:32,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:09:32,143 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:09:32,143 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:09:32,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:09:32,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:09:33,944 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:09:33,944 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:09:33,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:09:33 BoogieIcfgContainer [2020-10-12 13:09:33,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:09:33,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:09:33,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:09:33,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:09:33,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:09:30" (1/3) ... [2020-10-12 13:09:33,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63861e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:09:33, skipping insertion in model container [2020-10-12 13:09:33,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:09:31" (2/3) ... [2020-10-12 13:09:33,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63861e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:09:33, skipping insertion in model container [2020-10-12 13:09:33,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:09:33" (3/3) ... [2020-10-12 13:09:33,987 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label19.c [2020-10-12 13:09:33,998 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:09:34,010 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:09:34,025 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:09:34,063 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:09:34,064 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:09:34,065 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:09:34,065 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:09:34,065 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:09:34,065 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:09:34,065 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:09:34,065 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:09:34,100 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-12 13:09:34,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 13:09:34,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:09:34,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:09:34,112 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:09:34,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:09:34,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1241910813, now seen corresponding path program 1 times [2020-10-12 13:09:34,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:09:34,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277382015] [2020-10-12 13:09:34,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:09:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:34,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:34,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:34,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 13:09:34,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:34,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-12 13:09:34,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:34,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:09:34,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:09:34,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 13:09:34,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 13:09:34,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:09:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:34,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:34,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:34,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:09:34,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:34,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 13:09:34,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:34,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:09:34,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:34,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:09:34,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:09:35,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:09:35,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277382015] [2020-10-12 13:09:35,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:09:35,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:09:35,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134479594] [2020-10-12 13:09:35,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:09:35,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:09:35,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:09:35,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:09:35,050 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-10-12 13:09:37,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:09:37,539 INFO L93 Difference]: Finished difference Result 788 states and 1382 transitions. [2020-10-12 13:09:37,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:09:37,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-12 13:09:37,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:09:37,560 INFO L225 Difference]: With dead ends: 788 [2020-10-12 13:09:37,561 INFO L226 Difference]: Without dead ends: 431 [2020-10-12 13:09:37,570 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 [2020-10-12 13:09:37,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-12 13:09:37,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 425. [2020-10-12 13:09:37,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-10-12 13:09:37,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 612 transitions. [2020-10-12 13:09:37,658 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 612 transitions. Word has length 62 [2020-10-12 13:09:37,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:09:37,659 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 612 transitions. [2020-10-12 13:09:37,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:09:37,659 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 612 transitions. [2020-10-12 13:09:37,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-12 13:09:37,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:09:37,667 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:09:37,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:09:37,667 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:09:37,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:09:37,668 INFO L82 PathProgramCache]: Analyzing trace with hash -960518398, now seen corresponding path program 1 times [2020-10-12 13:09:37,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:09:37,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317498361] [2020-10-12 13:09:37,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:09:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:37,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:37,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:38,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:39,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:39,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-12 13:09:39,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:09:39,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1705 [2020-10-12 13:09:39,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:39,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:09:39,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:09:39,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 13:09:39,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:09:39,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:09:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:39,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:39,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:39,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:09:39,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:39,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 13:09:39,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:39,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:09:39,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:39,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:09:39,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 13:09:39,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:09:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:39,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:39,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:39,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 13:09:39,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:39,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-12 13:09:39,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:39,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:09:39,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:39,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 13:09:39,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:39,877 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:09:39,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317498361] [2020-10-12 13:09:39,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:09:39,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:09:39,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117019652] [2020-10-12 13:09:39,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:09:39,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:09:39,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:09:39,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:09:39,881 INFO L87 Difference]: Start difference. First operand 425 states and 612 transitions. Second operand 7 states. [2020-10-12 13:09:42,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:09:42,275 INFO L93 Difference]: Finished difference Result 1272 states and 1867 transitions. [2020-10-12 13:09:42,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:09:42,277 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-12 13:09:42,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:09:42,286 INFO L225 Difference]: With dead ends: 1272 [2020-10-12 13:09:42,287 INFO L226 Difference]: Without dead ends: 853 [2020-10-12 13:09:42,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:09:42,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-10-12 13:09:42,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 822. [2020-10-12 13:09:42,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2020-10-12 13:09:42,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1128 transitions. [2020-10-12 13:09:42,352 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1128 transitions. Word has length 134 [2020-10-12 13:09:42,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:09:42,356 INFO L479 AbstractCegarLoop]: Abstraction has 822 states and 1128 transitions. [2020-10-12 13:09:42,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:09:42,357 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1128 transitions. [2020-10-12 13:09:42,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-12 13:09:42,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:09:42,365 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:09:42,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:09:42,366 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:09:42,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:09:42,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1725156587, now seen corresponding path program 1 times [2020-10-12 13:09:42,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:09:42,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152679413] [2020-10-12 13:09:42,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:09:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:42,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:42,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:42,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 13:09:42,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:42,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 531 [2020-10-12 13:09:42,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:42,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:09:42,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:09:42,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 13:09:42,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:43,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:09:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:43,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:43,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:43,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:09:43,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:43,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:09:43,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:43,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:09:43,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:43,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:09:43,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:43,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:09:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:43,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:43,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:43,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:09:43,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:43,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-12 13:09:43,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:43,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:09:43,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:43,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:09:43,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:43,389 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:09:43,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152679413] [2020-10-12 13:09:43,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:09:43,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:09:43,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87297941] [2020-10-12 13:09:43,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:09:43,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:09:43,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:09:43,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:09:43,392 INFO L87 Difference]: Start difference. First operand 822 states and 1128 transitions. Second operand 7 states. [2020-10-12 13:09:46,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:09:46,005 INFO L93 Difference]: Finished difference Result 2059 states and 2784 transitions. [2020-10-12 13:09:46,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:09:46,006 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-12 13:09:46,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:09:46,015 INFO L225 Difference]: With dead ends: 2059 [2020-10-12 13:09:46,015 INFO L226 Difference]: Without dead ends: 1243 [2020-10-12 13:09:46,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:09:46,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2020-10-12 13:09:46,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1218. [2020-10-12 13:09:46,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1218 states. [2020-10-12 13:09:46,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1560 transitions. [2020-10-12 13:09:46,062 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1560 transitions. Word has length 135 [2020-10-12 13:09:46,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:09:46,063 INFO L479 AbstractCegarLoop]: Abstraction has 1218 states and 1560 transitions. [2020-10-12 13:09:46,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:09:46,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1560 transitions. [2020-10-12 13:09:46,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-12 13:09:46,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:09:46,067 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:09:46,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:09:46,068 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:09:46,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:09:46,068 INFO L82 PathProgramCache]: Analyzing trace with hash 460038220, now seen corresponding path program 1 times [2020-10-12 13:09:46,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:09:46,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245403151] [2020-10-12 13:09:46,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:09:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:46,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:46,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:46,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-12 13:09:46,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:46,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-10-12 13:09:46,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:46,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:09:46,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:09:46,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 13:09:46,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:46,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:09:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:46,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:46,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:46,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:09:46,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:46,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:09:46,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:46,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:46,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:46,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:46,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-12 13:09:46,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:09:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:46,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:46,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:46,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:09:46,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:46,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-12 13:09:46,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:46,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:09:46,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:46,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:09:46,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:46,944 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:09:46,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245403151] [2020-10-12 13:09:46,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:09:46,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:09:46,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856983637] [2020-10-12 13:09:46,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:09:46,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:09:46,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:09:46,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:09:46,949 INFO L87 Difference]: Start difference. First operand 1218 states and 1560 transitions. Second operand 5 states. [2020-10-12 13:09:49,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:09:49,298 INFO L93 Difference]: Finished difference Result 2454 states and 3329 transitions. [2020-10-12 13:09:49,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:09:49,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-12 13:09:49,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:09:49,310 INFO L225 Difference]: With dead ends: 2454 [2020-10-12 13:09:49,310 INFO L226 Difference]: Without dead ends: 1620 [2020-10-12 13:09:49,312 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 [2020-10-12 13:09:49,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2020-10-12 13:09:49,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 1604. [2020-10-12 13:09:49,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2020-10-12 13:09:49,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2096 transitions. [2020-10-12 13:09:49,370 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2096 transitions. Word has length 193 [2020-10-12 13:09:49,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:09:49,372 INFO L479 AbstractCegarLoop]: Abstraction has 1604 states and 2096 transitions. [2020-10-12 13:09:49,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:09:49,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2096 transitions. [2020-10-12 13:09:49,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-12 13:09:49,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:09:49,379 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:09:49,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:09:49,380 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:09:49,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:09:49,380 INFO L82 PathProgramCache]: Analyzing trace with hash -2094975877, now seen corresponding path program 1 times [2020-10-12 13:09:49,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:09:49,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556157250] [2020-10-12 13:09:49,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:09:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:49,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:49,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:50,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:51,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:51,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-12 13:09:51,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:09:51,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2351 [2020-10-12 13:09:51,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:51,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:09:51,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-12 13:09:51,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 13:09:51,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:51,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:09:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:51,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:51,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:51,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:09:51,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:51,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:09:51,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:51,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:51,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:51,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:51,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:51,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:09:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:51,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:52,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:52,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:09:52,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:52,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-12 13:09:52,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:52,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:09:52,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:52,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:09:52,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:52,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:09:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:52,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:52,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:52,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 13:09:52,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:52,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-12 13:09:52,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:52,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:09:52,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:52,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 13:09:52,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:52,316 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:09:52,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556157250] [2020-10-12 13:09:52,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:09:52,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:09:52,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822914487] [2020-10-12 13:09:52,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:09:52,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:09:52,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:09:52,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:09:52,322 INFO L87 Difference]: Start difference. First operand 1604 states and 2096 transitions. Second operand 7 states. [2020-10-12 13:09:54,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:09:54,680 INFO L93 Difference]: Finished difference Result 3219 states and 4341 transitions. [2020-10-12 13:09:54,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:09:54,680 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2020-10-12 13:09:54,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:09:54,692 INFO L225 Difference]: With dead ends: 3219 [2020-10-12 13:09:54,692 INFO L226 Difference]: Without dead ends: 1999 [2020-10-12 13:09:54,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:09:54,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2020-10-12 13:09:54,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1988. [2020-10-12 13:09:54,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1988 states. [2020-10-12 13:09:54,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 2586 transitions. [2020-10-12 13:09:54,748 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 2586 transitions. Word has length 250 [2020-10-12 13:09:54,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:09:54,749 INFO L479 AbstractCegarLoop]: Abstraction has 1988 states and 2586 transitions. [2020-10-12 13:09:54,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:09:54,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 2586 transitions. [2020-10-12 13:09:54,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-12 13:09:54,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:09:54,754 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:09:54,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:09:54,755 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:09:54,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:09:54,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1761367228, now seen corresponding path program 1 times [2020-10-12 13:09:54,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:09:54,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284223587] [2020-10-12 13:09:54,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:09:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:54,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:55,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:56,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:56,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:56,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-12 13:09:56,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:09:56,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2004 [2020-10-12 13:09:56,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:56,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:09:56,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:09:56,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 257 [2020-10-12 13:09:56,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:56,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:09:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:56,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:56,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:56,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:09:56,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:56,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:09:56,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:56,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:09:56,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:56,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:09:56,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:56,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:09:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:57,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:57,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:57,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:09:57,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:57,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-12 13:09:57,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:57,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:09:57,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:57,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 13:09:57,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:57,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:09:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:57,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:57,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:57,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:09:57,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:57,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-12 13:09:57,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:09:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:09:57,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:57,883 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 66 proven. 113 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 13:09:57,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284223587] [2020-10-12 13:09:57,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:09:57,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:09:57,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866692839] [2020-10-12 13:09:57,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:09:57,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:09:57,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:09:57,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:09:57,886 INFO L87 Difference]: Start difference. First operand 1988 states and 2586 transitions. Second operand 9 states. [2020-10-12 13:10:01,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:10:01,618 INFO L93 Difference]: Finished difference Result 4438 states and 6036 transitions. [2020-10-12 13:10:01,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 13:10:01,624 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 251 [2020-10-12 13:10:01,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:10:01,639 INFO L225 Difference]: With dead ends: 4438 [2020-10-12 13:10:01,640 INFO L226 Difference]: Without dead ends: 2834 [2020-10-12 13:10:01,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-12 13:10:01,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2020-10-12 13:10:01,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 2778. [2020-10-12 13:10:01,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2778 states. [2020-10-12 13:10:01,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 3515 transitions. [2020-10-12 13:10:01,729 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 3515 transitions. Word has length 251 [2020-10-12 13:10:01,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:01,730 INFO L479 AbstractCegarLoop]: Abstraction has 2778 states and 3515 transitions. [2020-10-12 13:10:01,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:10:01,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 3515 transitions. [2020-10-12 13:10:01,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-12 13:10:01,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:01,735 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:10:01,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:10:01,736 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:01,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:01,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1452567063, now seen corresponding path program 1 times [2020-10-12 13:10:01,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:01,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675928953] [2020-10-12 13:10:01,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:01,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:01,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:02,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:04,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:04,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-12 13:10:04,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:10:04,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2391 [2020-10-12 13:10:04,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:04,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:04,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-12 13:10:04,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 13:10:04,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:04,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:10:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:04,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:04,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:04,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:10:04,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:04,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:10:04,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:04,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:04,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:04,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:04,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:10:04,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:10:04,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:04,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:04,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:04,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:10:04,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:04,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-12 13:10:04,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:04,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:10:04,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 30 [2020-10-12 13:10:04,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:10:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:04,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:04,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:04,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 13:10:04,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:04,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-12 13:10:04,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:04,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:04,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:04,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 13:10:04,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:04,821 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:10:04,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675928953] [2020-10-12 13:10:04,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:10:04,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:10:04,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991078818] [2020-10-12 13:10:04,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:10:04,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:10:04,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:10:04,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:10:04,826 INFO L87 Difference]: Start difference. First operand 2778 states and 3515 transitions. Second operand 7 states. [2020-10-12 13:10:08,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:10:08,021 INFO L93 Difference]: Finished difference Result 5594 states and 7243 transitions. [2020-10-12 13:10:08,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 13:10:08,022 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2020-10-12 13:10:08,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:10:08,039 INFO L225 Difference]: With dead ends: 5594 [2020-10-12 13:10:08,039 INFO L226 Difference]: Without dead ends: 3200 [2020-10-12 13:10:08,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:10:08,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3200 states. [2020-10-12 13:10:08,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3200 to 3179. [2020-10-12 13:10:08,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3179 states. [2020-10-12 13:10:08,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 4002 transitions. [2020-10-12 13:10:08,134 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 4002 transitions. Word has length 252 [2020-10-12 13:10:08,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:08,134 INFO L479 AbstractCegarLoop]: Abstraction has 3179 states and 4002 transitions. [2020-10-12 13:10:08,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:10:08,135 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 4002 transitions. [2020-10-12 13:10:08,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-12 13:10:08,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:08,141 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:10:08,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:10:08,141 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:08,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:08,142 INFO L82 PathProgramCache]: Analyzing trace with hash 147677795, now seen corresponding path program 1 times [2020-10-12 13:10:08,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:08,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845036844] [2020-10-12 13:10:08,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:08,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:08,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:08,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:10,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:10,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-12 13:10:10,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:10:10,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2297 [2020-10-12 13:10:10,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:10,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:10,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-12 13:10:10,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 13:10:10,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:10:10,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:10:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:10,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:10,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:10,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:10:10,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:10,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:10:10,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:10,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:10,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:10,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:10,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:10:10,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:10:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:10,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:10,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:10,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:10:10,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:10,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-12 13:10:10,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:10,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:10,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:10,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-12 13:10:10,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:10,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:10:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:10,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:10,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:10,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 13:10:10,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:10,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-12 13:10:10,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:10,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:10,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:10,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 13:10:10,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:11,109 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:10:11,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845036844] [2020-10-12 13:10:11,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:10:11,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:10:11,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103461701] [2020-10-12 13:10:11,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:10:11,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:10:11,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:10:11,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:10:11,112 INFO L87 Difference]: Start difference. First operand 3179 states and 4002 transitions. Second operand 7 states. [2020-10-12 13:10:14,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:10:14,849 INFO L93 Difference]: Finished difference Result 7387 states and 9744 transitions. [2020-10-12 13:10:14,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:10:14,851 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2020-10-12 13:10:14,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:10:14,871 INFO L225 Difference]: With dead ends: 7387 [2020-10-12 13:10:14,871 INFO L226 Difference]: Without dead ends: 4592 [2020-10-12 13:10:14,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:10:14,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4592 states. [2020-10-12 13:10:14,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4592 to 4179. [2020-10-12 13:10:14,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4179 states. [2020-10-12 13:10:14,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4179 states to 4179 states and 5192 transitions. [2020-10-12 13:10:14,997 INFO L78 Accepts]: Start accepts. Automaton has 4179 states and 5192 transitions. Word has length 262 [2020-10-12 13:10:14,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:14,997 INFO L479 AbstractCegarLoop]: Abstraction has 4179 states and 5192 transitions. [2020-10-12 13:10:14,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:10:14,998 INFO L276 IsEmpty]: Start isEmpty. Operand 4179 states and 5192 transitions. [2020-10-12 13:10:15,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-12 13:10:15,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:15,007 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:10:15,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:10:15,008 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:15,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:15,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1263478689, now seen corresponding path program 1 times [2020-10-12 13:10:15,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:15,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315676067] [2020-10-12 13:10:15,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:15,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:15,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:15,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:16,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:19,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:19,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-12 13:10:19,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:10:19,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4140 [2020-10-12 13:10:19,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:19,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:10:19,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:10:19,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-12 13:10:19,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:10:19,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:10:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:19,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:19,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:19,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:10:19,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:19,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 13:10:19,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:10:19,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:10:19,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:10:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:19,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:19,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:19,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:19,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:10:19,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:10:19,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-12 13:10:19,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:19,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:19,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-12 13:10:19,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:19,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:10:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:19,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:19,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:19,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:10:19,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:19,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 13:10:19,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:19,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:19,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-12 13:10:19,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:19,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:19,922 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 110 proven. 89 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:10:19,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315676067] [2020-10-12 13:10:19,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:10:19,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:10:19,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667210151] [2020-10-12 13:10:19,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:10:19,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:10:19,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:10:19,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:10:19,924 INFO L87 Difference]: Start difference. First operand 4179 states and 5192 transitions. Second operand 7 states. [2020-10-12 13:10:22,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:10:22,655 INFO L93 Difference]: Finished difference Result 9202 states and 12200 transitions. [2020-10-12 13:10:22,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:10:22,656 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 287 [2020-10-12 13:10:22,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:10:22,682 INFO L225 Difference]: With dead ends: 9202 [2020-10-12 13:10:22,682 INFO L226 Difference]: Without dead ends: 5407 [2020-10-12 13:10:22,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:10:22,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5407 states. [2020-10-12 13:10:22,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5407 to 4761. [2020-10-12 13:10:22,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4761 states. [2020-10-12 13:10:22,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4761 states to 4761 states and 5942 transitions. [2020-10-12 13:10:22,851 INFO L78 Accepts]: Start accepts. Automaton has 4761 states and 5942 transitions. Word has length 287 [2020-10-12 13:10:22,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:22,851 INFO L479 AbstractCegarLoop]: Abstraction has 4761 states and 5942 transitions. [2020-10-12 13:10:22,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:10:22,852 INFO L276 IsEmpty]: Start isEmpty. Operand 4761 states and 5942 transitions. [2020-10-12 13:10:22,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-12 13:10:22,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:22,868 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:10:22,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:10:22,868 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:22,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:22,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1032063254, now seen corresponding path program 1 times [2020-10-12 13:10:22,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:22,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134670085] [2020-10-12 13:10:22,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:23,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:23,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:24,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:24,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-12 13:10:24,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:10:24,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1755 [2020-10-12 13:10:24,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:24,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:24,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 253 [2020-10-12 13:10:24,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 13:10:24,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:24,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:10:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:24,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:24,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:24,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:10:24,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:24,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:10:24,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:24,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:24,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:24,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:24,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:24,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:10:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:24,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:24,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:24,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 13:10:24,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:24,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 13:10:24,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:24,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:24,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 13:10:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:24,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:24,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:24,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:10:24,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:24,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 13:10:24,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:24,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:24,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:24,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 13:10:24,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:25,043 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-12 13:10:25,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134670085] [2020-10-12 13:10:25,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:10:25,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:10:25,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127148136] [2020-10-12 13:10:25,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:10:25,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:10:25,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:10:25,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:10:25,046 INFO L87 Difference]: Start difference. First operand 4761 states and 5942 transitions. Second operand 5 states. [2020-10-12 13:10:27,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:10:27,212 INFO L93 Difference]: Finished difference Result 8969 states and 11335 transitions. [2020-10-12 13:10:27,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:10:27,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 303 [2020-10-12 13:10:27,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:10:27,249 INFO L225 Difference]: With dead ends: 8969 [2020-10-12 13:10:27,249 INFO L226 Difference]: Without dead ends: 5946 [2020-10-12 13:10:27,258 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 [2020-10-12 13:10:27,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5946 states. [2020-10-12 13:10:27,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5946 to 5545. [2020-10-12 13:10:27,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5545 states. [2020-10-12 13:10:27,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5545 states to 5545 states and 6941 transitions. [2020-10-12 13:10:27,392 INFO L78 Accepts]: Start accepts. Automaton has 5545 states and 6941 transitions. Word has length 303 [2020-10-12 13:10:27,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:27,393 INFO L479 AbstractCegarLoop]: Abstraction has 5545 states and 6941 transitions. [2020-10-12 13:10:27,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:10:27,393 INFO L276 IsEmpty]: Start isEmpty. Operand 5545 states and 6941 transitions. [2020-10-12 13:10:27,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-12 13:10:27,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:27,407 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:10:27,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 13:10:27,407 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:27,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:27,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1135141448, now seen corresponding path program 1 times [2020-10-12 13:10:27,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:27,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698892316] [2020-10-12 13:10:27,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:27,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:27,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:28,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:28,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-12 13:10:28,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:10:28,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-10-12 13:10:28,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:28,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:28,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-12 13:10:28,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 13:10:28,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:28,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:10:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:28,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:28,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:28,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:10:28,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:28,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:10:28,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:28,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:28,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:28,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:28,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:28,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:10:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:28,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:28,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:28,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 13:10:28,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:28,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 13:10:28,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:28,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:28,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:28,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:28,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:28,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-12 13:10:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:28,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:28,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:28,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 13:10:28,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:28,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 13:10:28,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:28,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:28,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:28,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 13:10:28,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:28,505 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 13:10:28,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698892316] [2020-10-12 13:10:28,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:10:28,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:10:28,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473309278] [2020-10-12 13:10:28,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:10:28,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:10:28,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:10:28,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:10:28,508 INFO L87 Difference]: Start difference. First operand 5545 states and 6941 transitions. Second operand 5 states. [2020-10-12 13:10:30,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:10:30,081 INFO L93 Difference]: Finished difference Result 9191 states and 11658 transitions. [2020-10-12 13:10:30,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:10:30,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 305 [2020-10-12 13:10:30,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:10:30,100 INFO L225 Difference]: With dead ends: 9191 [2020-10-12 13:10:30,101 INFO L226 Difference]: Without dead ends: 5557 [2020-10-12 13:10:30,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:10:30,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5557 states. [2020-10-12 13:10:30,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5557 to 5543. [2020-10-12 13:10:30,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5543 states. [2020-10-12 13:10:30,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5543 states to 5543 states and 6932 transitions. [2020-10-12 13:10:30,223 INFO L78 Accepts]: Start accepts. Automaton has 5543 states and 6932 transitions. Word has length 305 [2020-10-12 13:10:30,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:30,224 INFO L479 AbstractCegarLoop]: Abstraction has 5543 states and 6932 transitions. [2020-10-12 13:10:30,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:10:30,224 INFO L276 IsEmpty]: Start isEmpty. Operand 5543 states and 6932 transitions. [2020-10-12 13:10:30,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-12 13:10:30,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:30,236 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:10:30,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 13:10:30,236 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:30,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:30,237 INFO L82 PathProgramCache]: Analyzing trace with hash 747935385, now seen corresponding path program 1 times [2020-10-12 13:10:30,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:30,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951533362] [2020-10-12 13:10:30,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:30,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:30,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:31,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:31,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-12 13:10:31,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:10:31,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 994 [2020-10-12 13:10:31,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:31,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:10:31,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:10:31,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-12 13:10:31,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:31,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:10:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:31,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:31,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:31,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:10:31,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:31,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:10:31,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:31,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:31,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:31,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:31,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:31,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:10:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:31,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:31,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:31,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:10:31,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:31,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 13:10:31,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:31,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:31,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:31,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:10:31,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:31,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:10:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:31,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:31,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:31,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-12 13:10:31,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:31,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-12 13:10:31,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:31,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:31,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:31,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-12 13:10:31,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:31,956 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 179 proven. 55 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:10:31,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951533362] [2020-10-12 13:10:31,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:10:31,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:10:31,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414315024] [2020-10-12 13:10:31,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:10:31,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:10:31,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:10:31,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:10:31,959 INFO L87 Difference]: Start difference. First operand 5543 states and 6932 transitions. Second operand 6 states. [2020-10-12 13:10:34,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:10:34,162 INFO L93 Difference]: Finished difference Result 9212 states and 11820 transitions. [2020-10-12 13:10:34,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:10:34,169 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 331 [2020-10-12 13:10:34,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:10:34,189 INFO L225 Difference]: With dead ends: 9212 [2020-10-12 13:10:34,190 INFO L226 Difference]: Without dead ends: 5601 [2020-10-12 13:10:34,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:10:34,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5601 states. [2020-10-12 13:10:34,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5601 to 5537. [2020-10-12 13:10:34,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5537 states. [2020-10-12 13:10:34,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5537 states to 5537 states and 6643 transitions. [2020-10-12 13:10:34,345 INFO L78 Accepts]: Start accepts. Automaton has 5537 states and 6643 transitions. Word has length 331 [2020-10-12 13:10:34,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:34,346 INFO L479 AbstractCegarLoop]: Abstraction has 5537 states and 6643 transitions. [2020-10-12 13:10:34,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:10:34,346 INFO L276 IsEmpty]: Start isEmpty. Operand 5537 states and 6643 transitions. [2020-10-12 13:10:34,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-12 13:10:34,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:34,367 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:10:34,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 13:10:34,367 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:34,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:34,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1531333545, now seen corresponding path program 1 times [2020-10-12 13:10:34,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:34,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722863015] [2020-10-12 13:10:34,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:34,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:34,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:36,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:36,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-12 13:10:36,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:10:36,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1644 [2020-10-12 13:10:36,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:36,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:36,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:10:36,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:10:36,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:36,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:10:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:36,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:36,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:36,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:10:36,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:36,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:10:36,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:36,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:36,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:36,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:36,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:36,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:10:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:36,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:36,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:36,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:10:36,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:36,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 13:10:36,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:36,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:36,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:36,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:10:36,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:36,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:10:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:36,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:36,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:36,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 13:10:36,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:36,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-12 13:10:36,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:36,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:36,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:36,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 13:10:36,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:36,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-12 13:10:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:36,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:36,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:36,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:10:36,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:36,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 13:10:36,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:36,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:36,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-12 13:10:36,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:36,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:36,656 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 236 proven. 69 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-12 13:10:36,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722863015] [2020-10-12 13:10:36,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:10:36,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:10:36,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118657246] [2020-10-12 13:10:36,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:10:36,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:10:36,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:10:36,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:10:36,658 INFO L87 Difference]: Start difference. First operand 5537 states and 6643 transitions. Second operand 7 states. [2020-10-12 13:10:39,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:10:39,325 INFO L93 Difference]: Finished difference Result 11351 states and 13623 transitions. [2020-10-12 13:10:39,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:10:39,326 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 336 [2020-10-12 13:10:39,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:10:39,344 INFO L225 Difference]: With dead ends: 11351 [2020-10-12 13:10:39,345 INFO L226 Difference]: Without dead ends: 6198 [2020-10-12 13:10:39,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:10:39,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6198 states. [2020-10-12 13:10:39,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6198 to 6151. [2020-10-12 13:10:39,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6151 states. [2020-10-12 13:10:39,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6151 states to 6151 states and 7270 transitions. [2020-10-12 13:10:39,467 INFO L78 Accepts]: Start accepts. Automaton has 6151 states and 7270 transitions. Word has length 336 [2020-10-12 13:10:39,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:39,468 INFO L479 AbstractCegarLoop]: Abstraction has 6151 states and 7270 transitions. [2020-10-12 13:10:39,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:10:39,468 INFO L276 IsEmpty]: Start isEmpty. Operand 6151 states and 7270 transitions. [2020-10-12 13:10:39,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-10-12 13:10:39,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:39,481 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:10:39,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 13:10:39,482 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:39,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:39,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1420359661, now seen corresponding path program 1 times [2020-10-12 13:10:39,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:39,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629887070] [2020-10-12 13:10:39,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:39,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:40,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:40,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-12 13:10:40,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:40,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-10-12 13:10:40,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:40,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:40,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-12 13:10:40,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:10:40,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:40,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:10:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:40,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:40,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:40,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:10:40,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:40,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:10:40,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:40,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:40,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:40,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:40,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:40,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:10:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:40,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:40,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:40,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:10:40,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:40,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 13:10:40,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:40,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:40,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:40,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:40,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:40,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:10:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:40,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:40,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:40,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:10:40,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:40,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 13:10:40,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:40,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:40,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:40,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:10:40,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:40,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 13:10:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:40,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:40,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:40,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:10:40,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:40,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 13:10:40,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:10:40,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:40,516 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-12 13:10:40,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629887070] [2020-10-12 13:10:40,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:10:40,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:10:40,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351117186] [2020-10-12 13:10:40,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:10:40,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:10:40,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:10:40,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:10:40,519 INFO L87 Difference]: Start difference. First operand 6151 states and 7270 transitions. Second operand 8 states. [2020-10-12 13:10:44,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:10:44,056 INFO L93 Difference]: Finished difference Result 11380 states and 13630 transitions. [2020-10-12 13:10:44,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 13:10:44,057 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 347 [2020-10-12 13:10:44,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:10:44,090 INFO L225 Difference]: With dead ends: 11380 [2020-10-12 13:10:44,090 INFO L226 Difference]: Without dead ends: 7357 [2020-10-12 13:10:44,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:10:44,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7357 states. [2020-10-12 13:10:44,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7357 to 6933. [2020-10-12 13:10:44,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6933 states. [2020-10-12 13:10:44,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6933 states to 6933 states and 8332 transitions. [2020-10-12 13:10:44,243 INFO L78 Accepts]: Start accepts. Automaton has 6933 states and 8332 transitions. Word has length 347 [2020-10-12 13:10:44,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:44,243 INFO L479 AbstractCegarLoop]: Abstraction has 6933 states and 8332 transitions. [2020-10-12 13:10:44,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:10:44,244 INFO L276 IsEmpty]: Start isEmpty. Operand 6933 states and 8332 transitions. [2020-10-12 13:10:44,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-12 13:10:44,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:44,254 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:10:44,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 13:10:44,254 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:44,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:44,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1781590312, now seen corresponding path program 1 times [2020-10-12 13:10:44,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:44,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302275236] [2020-10-12 13:10:44,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:44,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:44,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:44,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:45,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:45,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:45,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-12 13:10:45,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:10:45,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 981 [2020-10-12 13:10:45,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:45,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-12 13:10:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-12 13:10:45,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:45,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:10:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:45,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:45,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:45,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:10:45,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:45,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:10:45,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:45,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:45,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:45,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:45,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:45,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:10:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:45,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:45,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:45,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:10:45,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:45,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 13:10:45,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:45,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:45,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:45,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 13:10:45,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:45,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:10:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:45,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:45,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:45,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:45,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 13:10:45,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:10:45,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-12 13:10:45,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:45,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:45,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-12 13:10:45,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:10:45,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:45,810 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-12 13:10:45,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302275236] [2020-10-12 13:10:45,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:10:45,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 13:10:45,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695384551] [2020-10-12 13:10:45,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:10:45,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:10:45,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:10:45,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:10:45,812 INFO L87 Difference]: Start difference. First operand 6933 states and 8332 transitions. Second operand 5 states. [2020-10-12 13:10:47,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:10:47,054 INFO L93 Difference]: Finished difference Result 11753 states and 14231 transitions. [2020-10-12 13:10:47,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:10:47,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 352 [2020-10-12 13:10:47,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:10:47,073 INFO L225 Difference]: With dead ends: 11753 [2020-10-12 13:10:47,073 INFO L226 Difference]: Without dead ends: 6948 [2020-10-12 13:10:47,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:10:47,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6948 states. [2020-10-12 13:10:47,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6948 to 6918. [2020-10-12 13:10:47,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6918 states. [2020-10-12 13:10:47,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6918 states to 6918 states and 8292 transitions. [2020-10-12 13:10:47,234 INFO L78 Accepts]: Start accepts. Automaton has 6918 states and 8292 transitions. Word has length 352 [2020-10-12 13:10:47,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:47,236 INFO L479 AbstractCegarLoop]: Abstraction has 6918 states and 8292 transitions. [2020-10-12 13:10:47,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:10:47,236 INFO L276 IsEmpty]: Start isEmpty. Operand 6918 states and 8292 transitions. [2020-10-12 13:10:47,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-12 13:10:47,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:47,249 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:10:47,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 13:10:47,249 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:47,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:47,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1500590063, now seen corresponding path program 1 times [2020-10-12 13:10:47,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:47,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573737118] [2020-10-12 13:10:47,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:47,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:47,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:48,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:49,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:49,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-12 13:10:49,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:10:49,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2125 [2020-10-12 13:10:49,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:49,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:10:49,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:10:49,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 319 [2020-10-12 13:10:49,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:49,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:10:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:49,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:49,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:49,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:10:49,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:49,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:10:49,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:49,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:49,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:49,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:10:49,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:49,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:10:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:49,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:49,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:49,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 13:10:49,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:49,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-12 13:10:49,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:49,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:49,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:49,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-12 13:10:49,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:49,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 13:10:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:49,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:49,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:49,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 13:10:49,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:49,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-12 13:10:49,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:49,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:10:49,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:49,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-12 13:10:49,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:50,140 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 226 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 13:10:50,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573737118] [2020-10-12 13:10:50,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:10:50,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:10:50,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615513375] [2020-10-12 13:10:50,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:10:50,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:10:50,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:10:50,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:10:50,142 INFO L87 Difference]: Start difference. First operand 6918 states and 8292 transitions. Second operand 9 states. [2020-10-12 13:10:53,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:10:53,224 INFO L93 Difference]: Finished difference Result 14818 states and 18345 transitions. [2020-10-12 13:10:53,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 13:10:53,225 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 353 [2020-10-12 13:10:53,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:10:53,248 INFO L225 Difference]: With dead ends: 14818 [2020-10-12 13:10:53,249 INFO L226 Difference]: Without dead ends: 9984 [2020-10-12 13:10:53,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-12 13:10:53,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9984 states. [2020-10-12 13:10:53,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9984 to 9278. [2020-10-12 13:10:53,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9278 states. [2020-10-12 13:10:53,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9278 states to 9278 states and 11047 transitions. [2020-10-12 13:10:53,451 INFO L78 Accepts]: Start accepts. Automaton has 9278 states and 11047 transitions. Word has length 353 [2020-10-12 13:10:53,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:53,452 INFO L479 AbstractCegarLoop]: Abstraction has 9278 states and 11047 transitions. [2020-10-12 13:10:53,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:10:53,452 INFO L276 IsEmpty]: Start isEmpty. Operand 9278 states and 11047 transitions. [2020-10-12 13:10:53,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-12 13:10:53,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:53,467 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:10:53,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 13:10:53,467 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:53,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:53,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1449235584, now seen corresponding path program 1 times [2020-10-12 13:10:53,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:53,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808386273] [2020-10-12 13:10:53,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:53,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:53,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:54,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:54,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:55,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:55,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:58,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:58,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-12 13:10:58,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 13:10:58,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4524 [2020-10-12 13:10:58,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:58,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 13:10:58,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:10:58,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 370 [2020-10-12 13:10:58,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:58,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:10:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:58,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:58,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:58,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:10:58,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:58,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:10:58,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:58,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:58,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:58,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:10:58,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:58,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:10:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:58,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:58,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:58,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:58,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:10:58,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:10:58,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-12 13:10:58,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:58,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:58,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:58,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-12 13:10:58,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:58,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:10:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:58,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:58,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:58,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:58,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 13:10:58,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:10:58,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-12 13:10:58,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:58,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:58,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:58,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 13:10:58,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:58,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-12 13:10:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:58,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:58,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:58,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:10:58,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:58,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-12 13:10:58,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:58,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:10:58,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:58,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:10:58,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:58,961 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 0 proven. 303 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-12 13:10:58,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808386273] [2020-10-12 13:10:58,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:10:58,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:10:58,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957310758] [2020-10-12 13:10:58,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:10:58,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:10:58,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:10:58,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:10:58,963 INFO L87 Difference]: Start difference. First operand 9278 states and 11047 transitions. Second operand 9 states. [2020-10-12 13:11:02,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:11:02,445 INFO L93 Difference]: Finished difference Result 17738 states and 21835 transitions. [2020-10-12 13:11:02,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 13:11:02,446 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 362 [2020-10-12 13:11:02,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:11:02,473 INFO L225 Difference]: With dead ends: 17738 [2020-10-12 13:11:02,473 INFO L226 Difference]: Without dead ends: 10588 [2020-10-12 13:11:02,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-10-12 13:11:02,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10588 states. [2020-10-12 13:11:02,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10588 to 10418. [2020-10-12 13:11:02,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10418 states. [2020-10-12 13:11:02,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10418 states to 10418 states and 12284 transitions. [2020-10-12 13:11:02,685 INFO L78 Accepts]: Start accepts. Automaton has 10418 states and 12284 transitions. Word has length 362 [2020-10-12 13:11:02,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:11:02,686 INFO L479 AbstractCegarLoop]: Abstraction has 10418 states and 12284 transitions. [2020-10-12 13:11:02,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:11:02,686 INFO L276 IsEmpty]: Start isEmpty. Operand 10418 states and 12284 transitions. [2020-10-12 13:11:02,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-10-12 13:11:02,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:11:02,703 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:11:02,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 13:11:02,704 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:11:02,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:11:02,705 INFO L82 PathProgramCache]: Analyzing trace with hash -112607271, now seen corresponding path program 1 times [2020-10-12 13:11:02,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:11:02,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660665298] [2020-10-12 13:11:02,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:11:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:02,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:03,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:03,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:03,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 387 [2020-10-12 13:11:03,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:11:03,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1183 [2020-10-12 13:11:03,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:03,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:11:03,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-12 13:11:03,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 13:11:03,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:04,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:11:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:04,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:04,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:04,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:11:04,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:04,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:11:04,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:04,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:04,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:11:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:04,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:04,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:04,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:11:04,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:04,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 13:11:04,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:04,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:04,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:04,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:04,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:04,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:11:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:04,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:04,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:04,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:11:04,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:04,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 13:11:04,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:04,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:04,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:04,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:04,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:04,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 13:11:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:04,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:04,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:04,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-12 13:11:04,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:04,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 13:11:04,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:04,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:11:04,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:04,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 13:11:04,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:04,317 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 168 proven. 3 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2020-10-12 13:11:04,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660665298] [2020-10-12 13:11:04,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:11:04,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:11:04,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318856312] [2020-10-12 13:11:04,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:11:04,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:11:04,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:11:04,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:11:04,320 INFO L87 Difference]: Start difference. First operand 10418 states and 12284 transitions. Second operand 5 states. [2020-10-12 13:11:06,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:11:06,817 INFO L93 Difference]: Finished difference Result 20523 states and 24226 transitions. [2020-10-12 13:11:06,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:11:06,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 373 [2020-10-12 13:11:06,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:11:06,843 INFO L225 Difference]: With dead ends: 20523 [2020-10-12 13:11:06,843 INFO L226 Difference]: Without dead ends: 10489 [2020-10-12 13:11:06,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:11:06,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10489 states. [2020-10-12 13:11:07,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10489 to 10416. [2020-10-12 13:11:07,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10416 states. [2020-10-12 13:11:07,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10416 states to 10416 states and 12229 transitions. [2020-10-12 13:11:07,053 INFO L78 Accepts]: Start accepts. Automaton has 10416 states and 12229 transitions. Word has length 373 [2020-10-12 13:11:07,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:11:07,054 INFO L479 AbstractCegarLoop]: Abstraction has 10416 states and 12229 transitions. [2020-10-12 13:11:07,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:11:07,054 INFO L276 IsEmpty]: Start isEmpty. Operand 10416 states and 12229 transitions. [2020-10-12 13:11:07,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-12 13:11:07,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:11:07,066 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:11:07,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 13:11:07,067 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:11:07,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:11:07,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1324156300, now seen corresponding path program 1 times [2020-10-12 13:11:07,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:11:07,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718105522] [2020-10-12 13:11:07,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:11:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:07,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:07,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:07,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-12 13:11:07,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:07,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-12 13:11:07,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:07,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:11:07,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-12 13:11:07,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 13:11:07,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:07,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:11:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:07,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:07,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:07,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:11:07,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:07,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:11:07,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:07,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:07,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:07,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:07,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:07,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:11:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:07,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:07,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:07,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:11:07,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:07,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 13:11:07,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:07,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:07,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:07,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:07,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:07,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:11:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:07,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:07,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:07,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-12 13:11:07,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:07,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-12 13:11:07,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:07,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:11:07,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:07,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-12 13:11:07,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:08,307 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-12 13:11:08,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718105522] [2020-10-12 13:11:08,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:11:08,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:11:08,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373377496] [2020-10-12 13:11:08,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:11:08,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:11:08,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:11:08,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:11:08,309 INFO L87 Difference]: Start difference. First operand 10416 states and 12229 transitions. Second operand 5 states. [2020-10-12 13:11:10,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:11:10,664 INFO L93 Difference]: Finished difference Result 21684 states and 25412 transitions. [2020-10-12 13:11:10,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:11:10,665 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 376 [2020-10-12 13:11:10,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:11:10,693 INFO L225 Difference]: With dead ends: 21684 [2020-10-12 13:11:10,693 INFO L226 Difference]: Without dead ends: 13396 [2020-10-12 13:11:10,706 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 [2020-10-12 13:11:10,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13396 states. [2020-10-12 13:11:10,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13396 to 13316. [2020-10-12 13:11:10,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13316 states. [2020-10-12 13:11:10,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13316 states to 13316 states and 15561 transitions. [2020-10-12 13:11:10,903 INFO L78 Accepts]: Start accepts. Automaton has 13316 states and 15561 transitions. Word has length 376 [2020-10-12 13:11:10,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:11:10,903 INFO L479 AbstractCegarLoop]: Abstraction has 13316 states and 15561 transitions. [2020-10-12 13:11:10,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:11:10,903 INFO L276 IsEmpty]: Start isEmpty. Operand 13316 states and 15561 transitions. [2020-10-12 13:11:10,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-12 13:11:10,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:11:10,917 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:11:10,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 13:11:10,917 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:11:10,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:11:10,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1518984895, now seen corresponding path program 1 times [2020-10-12 13:11:10,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:11:10,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40508694] [2020-10-12 13:11:10,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:11:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:11,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:11,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:12,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:12,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:14,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:14,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-10-12 13:11:14,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:11:14,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3444 [2020-10-12 13:11:14,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:14,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 13:11:14,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:11:14,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 403 [2020-10-12 13:11:14,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:14,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:11:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:14,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:14,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:14,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:11:14,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:14,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:11:14,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:14,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:11:14,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:14,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:11:14,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:14,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:11:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:14,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:14,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:14,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:11:14,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:14,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-12 13:11:14,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:14,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:11:14,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:11:14,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-12 13:11:14,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:14,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:11:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:14,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:14,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:14,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:11:14,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:14,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-12 13:11:14,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:14,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:11:14,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:11:14,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 13:11:14,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:15,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 13:11:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:15,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:15,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:15,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:15,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 13:11:15,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:11:15,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-12 13:11:15,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:15,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:11:15,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:11:15,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-12 13:11:15,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:15,349 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 13:11:15,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40508694] [2020-10-12 13:11:15,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:11:15,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 13:11:15,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358080792] [2020-10-12 13:11:15,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 13:11:15,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:11:15,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 13:11:15,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:11:15,351 INFO L87 Difference]: Start difference. First operand 13316 states and 15561 transitions. Second operand 11 states. [2020-10-12 13:11:20,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:11:20,176 INFO L93 Difference]: Finished difference Result 27253 states and 32460 transitions. [2020-10-12 13:11:20,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 13:11:20,177 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 395 [2020-10-12 13:11:20,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:11:20,213 INFO L225 Difference]: With dead ends: 27253 [2020-10-12 13:11:20,213 INFO L226 Difference]: Without dead ends: 15681 [2020-10-12 13:11:20,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2020-10-12 13:11:20,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15681 states. [2020-10-12 13:11:20,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15681 to 15494. [2020-10-12 13:11:20,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15494 states. [2020-10-12 13:11:20,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15494 states to 15494 states and 18085 transitions. [2020-10-12 13:11:20,525 INFO L78 Accepts]: Start accepts. Automaton has 15494 states and 18085 transitions. Word has length 395 [2020-10-12 13:11:20,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:11:20,526 INFO L479 AbstractCegarLoop]: Abstraction has 15494 states and 18085 transitions. [2020-10-12 13:11:20,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 13:11:20,526 INFO L276 IsEmpty]: Start isEmpty. Operand 15494 states and 18085 transitions. [2020-10-12 13:11:20,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2020-10-12 13:11:20,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:11:20,543 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:11:20,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 13:11:20,544 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:11:20,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:11:20,544 INFO L82 PathProgramCache]: Analyzing trace with hash -340055265, now seen corresponding path program 1 times [2020-10-12 13:11:20,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:11:20,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095675104] [2020-10-12 13:11:20,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:11:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:20,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:21,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:21,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 418 [2020-10-12 13:11:21,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:21,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-10-12 13:11:21,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:21,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:11:21,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-12 13:11:21,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:11:21,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:21,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:11:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:21,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:21,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:21,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:11:21,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:21,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:11:21,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:21,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:21,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:21,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:21,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:21,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:11:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:21,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:21,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:21,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:11:21,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:21,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 13:11:21,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:21,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:21,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:21,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:21,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:21,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:11:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:21,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:21,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:21,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-12 13:11:21,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:21,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 13:11:21,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:21,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:11:21,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:21,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-12 13:11:21,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:21,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-12 13:11:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:21,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:21,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:21,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:11:21,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:21,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 13:11:21,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:21,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:11:21,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:11:21,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:11:21,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:21,553 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-12 13:11:21,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095675104] [2020-10-12 13:11:21,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:11:21,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:11:21,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641483664] [2020-10-12 13:11:21,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:11:21,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:11:21,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:11:21,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:11:21,555 INFO L87 Difference]: Start difference. First operand 15494 states and 18085 transitions. Second operand 7 states. [2020-10-12 13:11:25,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:11:25,138 INFO L93 Difference]: Finished difference Result 28467 states and 33785 transitions. [2020-10-12 13:11:25,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:11:25,140 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 404 [2020-10-12 13:11:25,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:11:25,166 INFO L225 Difference]: With dead ends: 28467 [2020-10-12 13:11:25,167 INFO L226 Difference]: Without dead ends: 16081 [2020-10-12 13:11:25,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:11:25,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16081 states. [2020-10-12 13:11:25,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16081 to 15887. [2020-10-12 13:11:25,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15887 states. [2020-10-12 13:11:25,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15887 states to 15887 states and 18548 transitions. [2020-10-12 13:11:25,461 INFO L78 Accepts]: Start accepts. Automaton has 15887 states and 18548 transitions. Word has length 404 [2020-10-12 13:11:25,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:11:25,462 INFO L479 AbstractCegarLoop]: Abstraction has 15887 states and 18548 transitions. [2020-10-12 13:11:25,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:11:25,462 INFO L276 IsEmpty]: Start isEmpty. Operand 15887 states and 18548 transitions. [2020-10-12 13:11:25,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2020-10-12 13:11:25,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:11:25,483 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:11:25,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 13:11:25,483 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:11:25,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:11:25,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1752407762, now seen corresponding path program 1 times [2020-10-12 13:11:25,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:11:25,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397245490] [2020-10-12 13:11:25,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:11:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:25,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:25,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:26,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:26,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 440 [2020-10-12 13:11:26,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:11:26,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1269 [2020-10-12 13:11:26,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:11:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 378 [2020-10-12 13:11:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 13:11:26,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:26,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:11:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:26,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:26,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:26,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:11:26,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:26,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:11:26,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:26,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:26,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:26,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:26,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:26,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:11:26,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:26,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:27,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:27,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:11:27,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:27,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 13:11:27,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:27,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:27,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:27,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:27,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:27,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:11:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:27,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:27,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:27,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:11:27,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:27,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 13:11:27,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:27,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:27,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:27,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:27,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:27,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 13:11:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:27,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:27,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:27,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-12 13:11:27,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:27,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 13:11:27,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:27,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:11:27,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:27,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-12 13:11:27,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:27,336 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 168 proven. 3 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-12 13:11:27,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397245490] [2020-10-12 13:11:27,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:11:27,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:11:27,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180423863] [2020-10-12 13:11:27,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:11:27,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:11:27,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:11:27,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:11:27,338 INFO L87 Difference]: Start difference. First operand 15887 states and 18548 transitions. Second operand 5 states. [2020-10-12 13:11:29,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:11:29,589 INFO L93 Difference]: Finished difference Result 19557 states and 22876 transitions. [2020-10-12 13:11:29,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:11:29,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 426 [2020-10-12 13:11:29,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:11:29,634 INFO L225 Difference]: With dead ends: 19557 [2020-10-12 13:11:29,634 INFO L226 Difference]: Without dead ends: 19555 [2020-10-12 13:11:29,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:11:29,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19555 states. [2020-10-12 13:11:29,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19555 to 17971. [2020-10-12 13:11:29,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17971 states. [2020-10-12 13:11:29,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17971 states to 17971 states and 21103 transitions. [2020-10-12 13:11:29,937 INFO L78 Accepts]: Start accepts. Automaton has 17971 states and 21103 transitions. Word has length 426 [2020-10-12 13:11:29,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:11:29,938 INFO L479 AbstractCegarLoop]: Abstraction has 17971 states and 21103 transitions. [2020-10-12 13:11:29,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:11:29,938 INFO L276 IsEmpty]: Start isEmpty. Operand 17971 states and 21103 transitions. [2020-10-12 13:11:29,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-10-12 13:11:29,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:11:29,951 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, 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, 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] [2020-10-12 13:11:29,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 13:11:29,951 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:11:29,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:11:29,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1569765903, now seen corresponding path program 1 times [2020-10-12 13:11:29,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:11:29,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565053217] [2020-10-12 13:11:29,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:11:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:30,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:30,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:30,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:33,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:33,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 465 [2020-10-12 13:11:33,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:11:33,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3659 [2020-10-12 13:11:33,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:33,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:11:33,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 328 [2020-10-12 13:11:33,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-12 13:11:33,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:33,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:11:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:33,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:33,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:33,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:11:33,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:33,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:11:33,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:33,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:33,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:33,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:33,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:33,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:11:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:33,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:33,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:33,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:11:33,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:33,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 13:11:33,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:33,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:33,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:33,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:33,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:33,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:11:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:33,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:33,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:33,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:11:33,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:33,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 13:11:33,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:33,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:33,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:33,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:33,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:33,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 13:11:33,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:33,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:33,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:33,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 13:11:33,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:33,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 13:11:33,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:33,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:11:33,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:33,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 13:11:33,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:33,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-12 13:11:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:33,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:34,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:34,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:11:34,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:34,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 13:11:34,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:34,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:11:34,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:11:34,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:11:34,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:34,164 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 385 proven. 57 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2020-10-12 13:11:34,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565053217] [2020-10-12 13:11:34,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:11:34,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:11:34,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870366096] [2020-10-12 13:11:34,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:11:34,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:11:34,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:11:34,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:11:34,167 INFO L87 Difference]: Start difference. First operand 17971 states and 21103 transitions. Second operand 8 states. [2020-10-12 13:11:39,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:11:39,321 INFO L93 Difference]: Finished difference Result 47001 states and 58097 transitions. [2020-10-12 13:11:39,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 13:11:39,322 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 449 [2020-10-12 13:11:39,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:11:39,382 INFO L225 Difference]: With dead ends: 47001 [2020-10-12 13:11:39,382 INFO L226 Difference]: Without dead ends: 29414 [2020-10-12 13:11:39,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-12 13:11:39,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29414 states. [2020-10-12 13:11:39,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29414 to 26213. [2020-10-12 13:11:39,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26213 states. [2020-10-12 13:11:39,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26213 states to 26213 states and 31039 transitions. [2020-10-12 13:11:39,878 INFO L78 Accepts]: Start accepts. Automaton has 26213 states and 31039 transitions. Word has length 449 [2020-10-12 13:11:39,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:11:39,879 INFO L479 AbstractCegarLoop]: Abstraction has 26213 states and 31039 transitions. [2020-10-12 13:11:39,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:11:39,879 INFO L276 IsEmpty]: Start isEmpty. Operand 26213 states and 31039 transitions. [2020-10-12 13:11:39,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-10-12 13:11:39,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:11:39,897 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, 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, 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] [2020-10-12 13:11:39,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 13:11:39,898 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:11:39,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:11:39,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1775351569, now seen corresponding path program 1 times [2020-10-12 13:11:39,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:11:39,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039881527] [2020-10-12 13:11:39,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:11:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:40,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:40,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:41,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:41,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 470 [2020-10-12 13:11:41,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:11:41,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1400 [2020-10-12 13:11:41,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:41,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:11:41,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-12 13:11:41,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 13:11:41,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:41,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:11:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:41,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:41,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:41,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:11:41,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:41,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:11:41,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:41,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:41,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:41,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:41,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:41,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:11:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:41,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:41,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:41,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:11:41,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:41,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 13:11:41,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:41,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:41,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:41,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:41,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:41,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:11:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:41,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:41,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:41,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:11:41,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:41,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 13:11:41,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:41,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:11:41,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:41,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:11:41,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:41,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 13:11:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:41,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:41,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:41,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 13:11:41,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:41,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-12 13:11:41,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:41,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:11:41,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:11:41,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 13:11:41,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:41,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-12 13:11:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:41,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:41,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:41,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:11:41,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:41,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 13:11:41,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:41,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:41,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-12 13:11:41,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:41,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:42,022 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 420 proven. 72 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2020-10-12 13:11:42,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039881527] [2020-10-12 13:11:42,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:11:42,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:11:42,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978465876] [2020-10-12 13:11:42,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:11:42,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:11:42,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:11:42,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:11:42,024 INFO L87 Difference]: Start difference. First operand 26213 states and 31039 transitions. Second operand 7 states. [2020-10-12 13:11:45,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:11:45,506 INFO L93 Difference]: Finished difference Result 50010 states and 59679 transitions. [2020-10-12 13:11:45,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:11:45,507 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 454 [2020-10-12 13:11:45,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:11:45,554 INFO L225 Difference]: With dead ends: 50010 [2020-10-12 13:11:45,554 INFO L226 Difference]: Without dead ends: 27673 [2020-10-12 13:11:45,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:11:45,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27673 states. [2020-10-12 13:11:45,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27673 to 27569. [2020-10-12 13:11:45,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27569 states. [2020-10-12 13:11:45,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27569 states to 27569 states and 32552 transitions. [2020-10-12 13:11:45,979 INFO L78 Accepts]: Start accepts. Automaton has 27569 states and 32552 transitions. Word has length 454 [2020-10-12 13:11:45,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:11:45,980 INFO L479 AbstractCegarLoop]: Abstraction has 27569 states and 32552 transitions. [2020-10-12 13:11:45,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:11:45,980 INFO L276 IsEmpty]: Start isEmpty. Operand 27569 states and 32552 transitions. [2020-10-12 13:11:45,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-10-12 13:11:45,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:11:45,997 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:11:45,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 13:11:45,998 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:11:45,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:11:45,998 INFO L82 PathProgramCache]: Analyzing trace with hash -753528158, now seen corresponding path program 1 times [2020-10-12 13:11:45,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:11:45,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109533598] [2020-10-12 13:11:45,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:11:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:46,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:46,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:47,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:48,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:48,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 476 [2020-10-12 13:11:48,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:11:48,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2035 [2020-10-12 13:11:48,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:48,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:11:48,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-12 13:11:48,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-12 13:11:48,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:48,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:11:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:48,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:48,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:48,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:11:48,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:48,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:11:48,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:48,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:48,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:48,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:11:48,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:11:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:48,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:48,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:48,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:11:48,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:48,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 13:11:48,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:48,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:48,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:48,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:48,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:11:48,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:11:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:48,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:48,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:48,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:11:48,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:48,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-12 13:11:48,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:48,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:11:48,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:48,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-12 13:11:48,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:11:48,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-12 13:11:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:48,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:49,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:49,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-12 13:11:49,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:49,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-12 13:11:49,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:49,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:11:49,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:11:49,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 13:11:49,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:11:49,555 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-12 13:11:49,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109533598] [2020-10-12 13:11:49,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:11:49,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:11:49,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131323553] [2020-10-12 13:11:49,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:11:49,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:11:49,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:11:49,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:11:49,557 INFO L87 Difference]: Start difference. First operand 27569 states and 32552 transitions. Second operand 7 states. [2020-10-12 13:11:53,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:11:53,337 INFO L93 Difference]: Finished difference Result 54422 states and 65080 transitions. [2020-10-12 13:11:53,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:11:53,338 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 462 [2020-10-12 13:11:53,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:11:53,388 INFO L225 Difference]: With dead ends: 54422 [2020-10-12 13:11:53,388 INFO L226 Difference]: Without dead ends: 31303 [2020-10-12 13:11:53,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:11:53,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31303 states. [2020-10-12 13:11:54,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31303 to 31201. [2020-10-12 13:11:54,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31201 states. [2020-10-12 13:11:54,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31201 states to 31201 states and 36581 transitions. [2020-10-12 13:11:54,144 INFO L78 Accepts]: Start accepts. Automaton has 31201 states and 36581 transitions. Word has length 462 [2020-10-12 13:11:54,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:11:54,145 INFO L479 AbstractCegarLoop]: Abstraction has 31201 states and 36581 transitions. [2020-10-12 13:11:54,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:11:54,145 INFO L276 IsEmpty]: Start isEmpty. Operand 31201 states and 36581 transitions. [2020-10-12 13:11:54,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2020-10-12 13:11:54,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:11:54,175 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, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:11:54,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 13:11:54,175 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:11:54,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:11:54,176 INFO L82 PathProgramCache]: Analyzing trace with hash 818957013, now seen corresponding path program 1 times [2020-10-12 13:11:54,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:11:54,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164154558] [2020-10-12 13:11:54,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:11:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:54,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:54,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:54,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:55,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:55,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:59,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:59,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 506 [2020-10-12 13:11:59,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:11:59,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-12 13:11:59,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:59,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:11:59,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-12 13:11:59,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 13:11:59,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:59,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:11:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:59,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:59,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:59,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:11:59,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:59,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:11:59,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:59,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:59,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:59,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:59,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:59,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:11:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:59,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:59,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:59,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 13:11:59,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:59,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-12 13:11:59,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:59,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:11:59,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:59,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-12 13:11:59,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:11:59,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 13:11:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:59,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:59,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:59,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 13:11:59,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:59,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-12 13:11:59,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:59,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:11:59,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:11:59,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 13:11:59,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:59,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-12 13:11:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:59,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:00,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:00,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:12:00,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:00,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 13:12:00,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:00,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:00,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-12 13:12:00,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:00,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:00,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-12 13:12:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:00,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:00,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:00,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 13:12:00,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:00,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 13:12:00,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:00,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:00,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-12 13:12:00,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:00,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:00,254 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 299 proven. 144 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-12 13:12:00,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164154558] [2020-10-12 13:12:00,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:12:00,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:12:00,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138168249] [2020-10-12 13:12:00,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:12:00,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:12:00,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:12:00,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:12:00,256 INFO L87 Difference]: Start difference. First operand 31201 states and 36581 transitions. Second operand 7 states. [2020-10-12 13:12:03,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:12:03,712 INFO L93 Difference]: Finished difference Result 63672 states and 74652 transitions. [2020-10-12 13:12:03,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:12:03,713 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 490 [2020-10-12 13:12:03,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:12:03,766 INFO L225 Difference]: With dead ends: 63672 [2020-10-12 13:12:03,767 INFO L226 Difference]: Without dead ends: 32855 [2020-10-12 13:12:03,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:12:03,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32855 states. [2020-10-12 13:12:04,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32855 to 32725. [2020-10-12 13:12:04,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32725 states. [2020-10-12 13:12:04,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32725 states to 32725 states and 38130 transitions. [2020-10-12 13:12:04,299 INFO L78 Accepts]: Start accepts. Automaton has 32725 states and 38130 transitions. Word has length 490 [2020-10-12 13:12:04,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:12:04,299 INFO L479 AbstractCegarLoop]: Abstraction has 32725 states and 38130 transitions. [2020-10-12 13:12:04,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:12:04,299 INFO L276 IsEmpty]: Start isEmpty. Operand 32725 states and 38130 transitions. [2020-10-12 13:12:04,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-10-12 13:12:04,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:12:04,328 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:12:04,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 13:12:04,329 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:12:04,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:12:04,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1334855743, now seen corresponding path program 1 times [2020-10-12 13:12:04,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:12:04,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262489557] [2020-10-12 13:12:04,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:12:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:04,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:04,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:04,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:06,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:06,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:06,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:09,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:09,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 512 [2020-10-12 13:12:09,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 13:12:09,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 13:12:09,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:09,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:12:09,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-12 13:12:09,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-12 13:12:09,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:09,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:12:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:09,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:09,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:09,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:12:09,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:09,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:12:09,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:09,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:09,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:09,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:09,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:09,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:12:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:09,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:09,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:09,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 13:12:09,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:09,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-12 13:12:09,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:09,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:12:09,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:09,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-12 13:12:09,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:12:09,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 13:12:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:09,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:09,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:10,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:10,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:12:10,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:12:10,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-12 13:12:10,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:10,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:12:10,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:12:10,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:12:10,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:10,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-12 13:12:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:10,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:10,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:10,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:12:10,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:10,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-12 13:12:10,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:10,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:12:10,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:12:10,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 13:12:10,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:10,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-12 13:12:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:10,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:10,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:10,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 13:12:10,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:10,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 13:12:10,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:10,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:10,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-12 13:12:10,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:10,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:10,747 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 388 proven. 164 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-10-12 13:12:10,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262489557] [2020-10-12 13:12:10,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:12:10,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:12:10,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833783210] [2020-10-12 13:12:10,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:12:10,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:12:10,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:12:10,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:12:10,750 INFO L87 Difference]: Start difference. First operand 32725 states and 38130 transitions. Second operand 8 states. [2020-10-12 13:12:14,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:12:14,435 INFO L93 Difference]: Finished difference Result 68436 states and 80895 transitions. [2020-10-12 13:12:14,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 13:12:14,436 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 496 [2020-10-12 13:12:14,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:12:14,505 INFO L225 Difference]: With dead ends: 68436 [2020-10-12 13:12:14,505 INFO L226 Difference]: Without dead ends: 36095 [2020-10-12 13:12:14,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:12:14,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36095 states. [2020-10-12 13:12:14,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36095 to 34986. [2020-10-12 13:12:14,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34986 states. [2020-10-12 13:12:15,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34986 states to 34986 states and 40374 transitions. [2020-10-12 13:12:15,027 INFO L78 Accepts]: Start accepts. Automaton has 34986 states and 40374 transitions. Word has length 496 [2020-10-12 13:12:15,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:12:15,028 INFO L479 AbstractCegarLoop]: Abstraction has 34986 states and 40374 transitions. [2020-10-12 13:12:15,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:12:15,028 INFO L276 IsEmpty]: Start isEmpty. Operand 34986 states and 40374 transitions. [2020-10-12 13:12:15,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2020-10-12 13:12:15,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:12:15,052 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, 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, 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] [2020-10-12 13:12:15,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 13:12:15,052 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:12:15,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:12:15,053 INFO L82 PathProgramCache]: Analyzing trace with hash 246635133, now seen corresponding path program 1 times [2020-10-12 13:12:15,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:12:15,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418724277] [2020-10-12 13:12:15,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:12:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:15,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:15,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:16,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:16,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 527 [2020-10-12 13:12:16,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:12:16,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1803 [2020-10-12 13:12:16,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:16,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:12:16,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 390 [2020-10-12 13:12:16,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:12:16,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:17,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:12:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:17,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:17,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:17,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:12:17,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:17,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:12:17,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:17,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:17,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:17,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:17,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:12:17,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:12:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:17,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:17,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:17,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:12:17,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:17,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 13:12:17,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:17,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:17,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:17,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:17,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:17,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:12:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:17,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:17,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:17,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-12 13:12:17,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:17,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 13:12:17,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:17,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:17,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:17,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:17,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:12:17,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-12 13:12:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:17,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:17,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:17,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 13:12:17,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:17,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-12 13:12:17,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:17,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:12:17,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:17,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 13:12:17,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:12:17,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-12 13:12:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:17,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:18,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:18,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:12:18,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:18,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-12 13:12:18,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:18,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:12:18,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:12:18,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:12:18,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:12:18,365 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 440 proven. 2 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2020-10-12 13:12:18,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418724277] [2020-10-12 13:12:18,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:12:18,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:12:18,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852031745] [2020-10-12 13:12:18,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:12:18,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:12:18,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:12:18,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:12:18,367 INFO L87 Difference]: Start difference. First operand 34986 states and 40374 transitions. Second operand 7 states. [2020-10-12 13:12:22,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:12:22,032 INFO L93 Difference]: Finished difference Result 65109 states and 75389 transitions. [2020-10-12 13:12:22,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:12:22,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 511 [2020-10-12 13:12:22,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:12:22,099 INFO L225 Difference]: With dead ends: 65109 [2020-10-12 13:12:22,099 INFO L226 Difference]: Without dead ends: 35123 [2020-10-12 13:12:22,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:12:22,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35123 states. [2020-10-12 13:12:22,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35123 to 34986. [2020-10-12 13:12:22,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34986 states. [2020-10-12 13:12:22,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34986 states to 34986 states and 40278 transitions. [2020-10-12 13:12:22,555 INFO L78 Accepts]: Start accepts. Automaton has 34986 states and 40278 transitions. Word has length 511 [2020-10-12 13:12:22,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:12:22,556 INFO L479 AbstractCegarLoop]: Abstraction has 34986 states and 40278 transitions. [2020-10-12 13:12:22,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:12:22,556 INFO L276 IsEmpty]: Start isEmpty. Operand 34986 states and 40278 transitions. [2020-10-12 13:12:22,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2020-10-12 13:12:22,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:12:22,580 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, 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, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:12:22,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 13:12:22,581 INFO L427 AbstractCegarLoop]: === Iteration 29 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:12:22,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:12:22,581 INFO L82 PathProgramCache]: Analyzing trace with hash 917122382, now seen corresponding path program 1 times [2020-10-12 13:12:22,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:12:22,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586366210] [2020-10-12 13:12:22,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:12:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:22,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:22,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:23,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:23,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:26,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:26,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 531 [2020-10-12 13:12:26,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:12:26,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3406 [2020-10-12 13:12:26,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:26,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:12:26,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 469 [2020-10-12 13:12:26,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 13:12:26,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:26,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:12:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:26,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:26,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:26,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:12:26,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:26,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:12:26,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:26,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:26,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:26,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:26,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:26,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:12:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:26,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:26,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:26,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:12:26,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:26,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 13:12:26,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:26,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:26,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:26,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:26,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:26,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:12:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:26,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:26,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:26,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 13:12:26,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:26,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 13:12:26,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:26,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:26,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:26,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:26,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:26,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-12 13:12:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:26,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:26,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:26,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:12:26,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:26,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 13:12:26,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:26,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:26,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:26,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:26,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:26,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-12 13:12:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:26,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:26,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:26,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 13:12:26,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:26,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 13:12:26,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:26,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:12:26,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:26,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 13:12:26,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:26,723 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 225 proven. 4 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2020-10-12 13:12:26,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586366210] [2020-10-12 13:12:26,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:12:26,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:12:26,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991516971] [2020-10-12 13:12:26,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:12:26,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:12:26,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:12:26,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:12:26,725 INFO L87 Difference]: Start difference. First operand 34986 states and 40278 transitions. Second operand 5 states. [2020-10-12 13:12:28,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:12:28,989 INFO L93 Difference]: Finished difference Result 64957 states and 75015 transitions. [2020-10-12 13:12:28,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:12:28,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 515 [2020-10-12 13:12:28,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:12:29,049 INFO L225 Difference]: With dead ends: 64957 [2020-10-12 13:12:29,050 INFO L226 Difference]: Without dead ends: 34918 [2020-10-12 13:12:29,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:12:29,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34918 states. [2020-10-12 13:12:29,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34918 to 34796. [2020-10-12 13:12:29,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34796 states. [2020-10-12 13:12:29,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34796 states to 34796 states and 39983 transitions. [2020-10-12 13:12:29,497 INFO L78 Accepts]: Start accepts. Automaton has 34796 states and 39983 transitions. Word has length 515 [2020-10-12 13:12:29,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:12:29,498 INFO L479 AbstractCegarLoop]: Abstraction has 34796 states and 39983 transitions. [2020-10-12 13:12:29,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:12:29,498 INFO L276 IsEmpty]: Start isEmpty. Operand 34796 states and 39983 transitions. [2020-10-12 13:12:29,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2020-10-12 13:12:29,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:12:29,525 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:12:29,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 13:12:29,526 INFO L427 AbstractCegarLoop]: === Iteration 30 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:12:29,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:12:29,526 INFO L82 PathProgramCache]: Analyzing trace with hash -655010893, now seen corresponding path program 1 times [2020-10-12 13:12:29,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:12:29,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307247715] [2020-10-12 13:12:29,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:12:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:29,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:29,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:30,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:31,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:34,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:34,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 607 [2020-10-12 13:12:34,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:12:34,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4629 [2020-10-12 13:12:34,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:34,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:12:34,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 545 [2020-10-12 13:12:34,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 13:12:34,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:34,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:12:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:34,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:34,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:34,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:12:34,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:34,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:12:34,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:34,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:34,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:34,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:34,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:34,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:12:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:34,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:34,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:34,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:12:34,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:34,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 13:12:34,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:34,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:34,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:34,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:34,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:34,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:12:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:34,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:34,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:34,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-12 13:12:34,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:34,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 13:12:34,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:34,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:34,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:34,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:34,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:34,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-12 13:12:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:34,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:34,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:34,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 13:12:34,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:34,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 13:12:34,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:34,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:34,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:34,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:34,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:34,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-12 13:12:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:34,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:34,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:34,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-12 13:12:34,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:34,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-12 13:12:34,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:34,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:12:34,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:34,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-12 13:12:34,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:34,971 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 225 proven. 4 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2020-10-12 13:12:34,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307247715] [2020-10-12 13:12:34,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:12:34,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:12:34,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756626706] [2020-10-12 13:12:34,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:12:34,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:12:34,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:12:34,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:12:34,974 INFO L87 Difference]: Start difference. First operand 34796 states and 39983 transitions. Second operand 5 states. [2020-10-12 13:12:37,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:12:37,876 INFO L93 Difference]: Finished difference Result 37182 states and 42799 transitions. [2020-10-12 13:12:37,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:12:37,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 591 [2020-10-12 13:12:37,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:12:37,943 INFO L225 Difference]: With dead ends: 37182 [2020-10-12 13:12:37,943 INFO L226 Difference]: Without dead ends: 37180 [2020-10-12 13:12:37,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:12:37,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37180 states. [2020-10-12 13:12:38,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37180 to 35176. [2020-10-12 13:12:38,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35176 states. [2020-10-12 13:12:38,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35176 states to 35176 states and 40512 transitions. [2020-10-12 13:12:38,383 INFO L78 Accepts]: Start accepts. Automaton has 35176 states and 40512 transitions. Word has length 591 [2020-10-12 13:12:38,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:12:38,383 INFO L479 AbstractCegarLoop]: Abstraction has 35176 states and 40512 transitions. [2020-10-12 13:12:38,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:12:38,383 INFO L276 IsEmpty]: Start isEmpty. Operand 35176 states and 40512 transitions. [2020-10-12 13:12:38,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2020-10-12 13:12:38,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:12:38,407 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, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:12:38,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 13:12:38,407 INFO L427 AbstractCegarLoop]: === Iteration 31 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:12:38,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:12:38,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1420613208, now seen corresponding path program 1 times [2020-10-12 13:12:38,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:12:38,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616349934] [2020-10-12 13:12:38,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:12:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:38,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:38,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:39,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:39,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:40,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:41,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:43,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:43,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 622 [2020-10-12 13:12:43,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 13:12:43,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 13:12:43,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:43,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 13:12:43,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 346 [2020-10-12 13:12:43,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-12 13:12:43,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:43,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:12:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:43,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:43,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:43,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:12:43,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:43,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:12:43,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:43,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:43,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:43,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:43,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:43,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:12:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:43,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:43,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:43,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:12:43,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:43,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 13:12:43,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:43,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:43,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:43,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:43,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:43,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:12:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:43,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:43,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:43,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 13:12:43,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:43,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 13:12:43,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:43,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:43,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:43,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:43,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:43,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-12 13:12:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:43,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:43,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:43,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:12:43,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:43,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 13:12:43,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:43,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:12:43,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:43,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:12:43,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:43,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-12 13:12:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:43,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:44,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:44,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 13:12:44,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:44,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-12 13:12:44,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:12:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:12:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-12 13:12:44,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:44,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-10-12 13:12:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:44,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:44,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:44,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:12:44,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:44,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 13:12:44,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:44,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:12:44,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:12:44,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:12:44,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:44,545 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2020-10-12 13:12:45,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 803 proven. 91 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2020-10-12 13:12:45,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616349934] [2020-10-12 13:12:45,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:12:45,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 13:12:45,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235362870] [2020-10-12 13:12:45,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:12:45,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:12:45,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:12:45,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:12:45,321 INFO L87 Difference]: Start difference. First operand 35176 states and 40512 transitions. Second operand 9 states. [2020-10-12 13:12:50,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:12:50,619 INFO L93 Difference]: Finished difference Result 65513 states and 75738 transitions. [2020-10-12 13:12:50,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:12:50,621 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 604 [2020-10-12 13:12:50,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:12:50,678 INFO L225 Difference]: With dead ends: 65513 [2020-10-12 13:12:50,679 INFO L226 Difference]: Without dead ends: 35315 [2020-10-12 13:12:50,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:12:50,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35315 states. [2020-10-12 13:12:51,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35315 to 35178. [2020-10-12 13:12:51,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35178 states. [2020-10-12 13:12:51,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35178 states to 35178 states and 40507 transitions. [2020-10-12 13:12:51,107 INFO L78 Accepts]: Start accepts. Automaton has 35178 states and 40507 transitions. Word has length 604 [2020-10-12 13:12:51,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:12:51,108 INFO L479 AbstractCegarLoop]: Abstraction has 35178 states and 40507 transitions. [2020-10-12 13:12:51,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:12:51,108 INFO L276 IsEmpty]: Start isEmpty. Operand 35178 states and 40507 transitions. [2020-10-12 13:12:51,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2020-10-12 13:12:51,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:12:51,136 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, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:12:51,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 13:12:51,137 INFO L427 AbstractCegarLoop]: === Iteration 32 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:12:51,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:12:51,137 INFO L82 PathProgramCache]: Analyzing trace with hash 897811959, now seen corresponding path program 1 times [2020-10-12 13:12:51,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:12:51,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481166407] [2020-10-12 13:12:51,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:12:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:51,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:51,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:52,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:52,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:53,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:53,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:53,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:53,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:54,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:54,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:56,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:56,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 658 [2020-10-12 13:12:56,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 13:12:56,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 13:12:56,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:56,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:12:56,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 390 [2020-10-12 13:12:56,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-12 13:12:56,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:56,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:12:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:56,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:56,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:56,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:12:56,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:56,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:12:56,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:56,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:56,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:56,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:56,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:56,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:12:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:56,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:56,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:56,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:12:56,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:56,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 13:12:56,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:56,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:56,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:56,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:56,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:56,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:12:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:56,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:56,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:56,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-12 13:12:56,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:56,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 13:12:56,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:56,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:56,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:56,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:56,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:56,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-12 13:12:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:56,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:56,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:56,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 13:12:56,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:56,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 13:12:56,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:56,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:12:56,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:56,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 13:12:56,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:56,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-12 13:12:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:56,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:56,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:56,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:56,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 13:12:56,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:12:56,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-12 13:12:56,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:56,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:12:56,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:12:56,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-12 13:12:56,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:56,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2020-10-12 13:12:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:56,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:56,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:56,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:12:56,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:56,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 13:12:56,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:56,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:12:56,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:12:56,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:12:56,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:57,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1271 backedges. 851 proven. 6 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2020-10-12 13:12:57,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481166407] [2020-10-12 13:12:57,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:12:57,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:12:57,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895185574] [2020-10-12 13:12:57,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:12:57,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:12:57,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:12:57,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:12:57,211 INFO L87 Difference]: Start difference. First operand 35178 states and 40507 transitions. Second operand 7 states. [2020-10-12 13:13:02,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:13:02,121 INFO L93 Difference]: Finished difference Result 68127 states and 78962 transitions. [2020-10-12 13:13:02,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:13:02,122 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 640 [2020-10-12 13:13:02,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:13:02,187 INFO L225 Difference]: With dead ends: 68127 [2020-10-12 13:13:02,187 INFO L226 Difference]: Without dead ends: 36221 [2020-10-12 13:13:02,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:13:02,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36221 states. [2020-10-12 13:13:02,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36221 to 35708. [2020-10-12 13:13:02,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35708 states. [2020-10-12 13:13:02,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35708 states to 35708 states and 40777 transitions. [2020-10-12 13:13:02,657 INFO L78 Accepts]: Start accepts. Automaton has 35708 states and 40777 transitions. Word has length 640 [2020-10-12 13:13:02,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:13:02,657 INFO L479 AbstractCegarLoop]: Abstraction has 35708 states and 40777 transitions. [2020-10-12 13:13:02,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:13:02,658 INFO L276 IsEmpty]: Start isEmpty. Operand 35708 states and 40777 transitions. [2020-10-12 13:13:02,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2020-10-12 13:13:02,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:13:02,692 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-12 13:13:02,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 13:13:02,693 INFO L427 AbstractCegarLoop]: === Iteration 33 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:13:02,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:13:02,693 INFO L82 PathProgramCache]: Analyzing trace with hash -503564932, now seen corresponding path program 1 times [2020-10-12 13:13:02,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:13:02,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979557483] [2020-10-12 13:13:02,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:13:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:02,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:02,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:03,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:03,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:03,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:03,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:04,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:04,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:05,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:06,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking...