/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/Problem04_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:37:46,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:37:46,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:37:46,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:37:46,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:37:46,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:37:46,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:37:46,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:37:46,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:37:46,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:37:46,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:37:46,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:37:46,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:37:46,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:37:46,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:37:46,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:37:46,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:37:46,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:37:46,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:37:46,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:37:46,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:37:46,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:37:46,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:37:46,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:37:46,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:37:46,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:37:46,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:37:46,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:37:46,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:37:46,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:37:46,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:37:46,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:37:46,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:37:46,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:37:46,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:37:46,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:37:46,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:37:46,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:37:46,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:37:46,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:37:46,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:37:46,522 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 11:37:46,559 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:37:46,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:37:46,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:37:46,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:37:46,561 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:37:46,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:37:46,562 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:37:46,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:37:46,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:37:46,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:37:46,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:37:46,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:37:46,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:37:46,564 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:37:46,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:37:46,565 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:37:46,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:37:46,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:37:46,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:37:46,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:37:46,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:37:46,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:37:46,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:37:46,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:37:46,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:37:46,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:37:46,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:37:46,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:37:46,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:37:46,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:37:46,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:37:46,909 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:37:46,912 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:37:46,913 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:37:46,913 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:37:46,914 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label28.c [2020-10-12 11:37:46,979 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6e2eead1/66beba34d1d04aaa8db80727ebea26b9/FLAG2a50bf47e [2020-10-12 11:37:47,716 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:37:47,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label28.c [2020-10-12 11:37:47,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6e2eead1/66beba34d1d04aaa8db80727ebea26b9/FLAG2a50bf47e [2020-10-12 11:37:48,263 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6e2eead1/66beba34d1d04aaa8db80727ebea26b9 [2020-10-12 11:37:48,273 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:37:48,274 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:37:48,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:37:48,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:37:48,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:37:48,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:37:48" (1/1) ... [2020-10-12 11:37:48,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e33fb78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:37:48, skipping insertion in model container [2020-10-12 11:37:48,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:37:48" (1/1) ... [2020-10-12 11:37:48,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:37:48,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:37:50,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:37:50,064 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:37:50,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:37:50,830 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:37:50,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:37:50 WrapperNode [2020-10-12 11:37:50,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:37:50,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:37:50,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:37:50,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:37:50,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:37:50" (1/1) ... [2020-10-12 11:37:50,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:37:50" (1/1) ... [2020-10-12 11:37:50,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:37:50" (1/1) ... [2020-10-12 11:37:50,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:37:50" (1/1) ... [2020-10-12 11:37:51,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:37:50" (1/1) ... [2020-10-12 11:37:51,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:37:50" (1/1) ... [2020-10-12 11:37:51,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:37:50" (1/1) ... [2020-10-12 11:37:51,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:37:51,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:37:51,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:37:51,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:37:51,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:37:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:37:51,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:37:51,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:37:51,163 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:37:51,163 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 11:37:51,164 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 11:37:51,164 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 11:37:51,164 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:37:51,164 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:37:51,164 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 11:37:51,165 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 11:37:51,165 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 11:37:51,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:37:51,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:37:51,165 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:37:51,165 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:37:51,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:37:51,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:37:55,376 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:37:55,376 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:37:55,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:37:55 BoogieIcfgContainer [2020-10-12 11:37:55,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:37:55,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:37:55,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:37:55,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:37:55,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:37:48" (1/3) ... [2020-10-12 11:37:55,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4ec20f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:37:55, skipping insertion in model container [2020-10-12 11:37:55,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:37:50" (2/3) ... [2020-10-12 11:37:55,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4ec20f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:37:55, skipping insertion in model container [2020-10-12 11:37:55,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:37:55" (3/3) ... [2020-10-12 11:37:55,408 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label28.c [2020-10-12 11:37:55,419 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:37:55,431 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:37:55,446 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:37:55,477 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:37:55,477 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:37:55,477 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:37:55,477 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:37:55,477 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:37:55,477 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:37:55,478 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:37:55,478 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:37:55,525 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-12 11:37:55,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2020-10-12 11:37:55,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:37:55,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:37:55,577 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:37:55,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:37:55,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1404863229, now seen corresponding path program 1 times [2020-10-12 11:37:55,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:37:55,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501808005] [2020-10-12 11:37:55,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:37:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:56,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:59,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:01,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:01,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 834 [2020-10-12 11:38:01,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:38:01,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 11:38:01,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:01,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 11:38:01,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:38:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-12 11:38:01,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:38:03,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:38:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:03,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:03,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:03,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:38:03,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:38:03,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 11:38:03,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:03,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:38:03,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:38:03,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:38:03,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:38:07,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:38:07,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501808005] [2020-10-12 11:38:07,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:38:07,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 11:38:07,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560558707] [2020-10-12 11:38:07,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 11:38:07,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:38:07,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 11:38:07,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-12 11:38:07,805 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 18 states. [2020-10-12 11:38:08,661 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-12 11:38:11,213 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 93 [2020-10-12 11:38:13,193 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-12 11:38:14,194 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-12 11:38:22,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:38:22,531 INFO L93 Difference]: Finished difference Result 2548 states and 4905 transitions. [2020-10-12 11:38:22,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:38:22,534 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 820 [2020-10-12 11:38:22,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:38:22,611 INFO L225 Difference]: With dead ends: 2548 [2020-10-12 11:38:22,612 INFO L226 Difference]: Without dead ends: 1580 [2020-10-12 11:38:22,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 11:38:22,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-10-12 11:38:22,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2020-10-12 11:38:22,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-10-12 11:38:22,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2339 transitions. [2020-10-12 11:38:22,857 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2339 transitions. Word has length 820 [2020-10-12 11:38:22,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:38:22,861 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 2339 transitions. [2020-10-12 11:38:22,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 11:38:22,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2339 transitions. [2020-10-12 11:38:22,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2020-10-12 11:38:22,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:38:22,910 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:38:22,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:38:22,910 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:38:22,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:38:22,911 INFO L82 PathProgramCache]: Analyzing trace with hash 216989332, now seen corresponding path program 1 times [2020-10-12 11:38:22,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:38:22,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594178663] [2020-10-12 11:38:22,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:38:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:23,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:25,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:27,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:28,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:28,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 855 [2020-10-12 11:38:28,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:38:28,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 11:38:28,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:28,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 11:38:28,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-12 11:38:28,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 705 [2020-10-12 11:38:28,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 11:38:29,585 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-12 11:38:29,695 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-12 11:38:30,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:38:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:30,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:30,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:30,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:38:30,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:38:30,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:38:30,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:30,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:38:30,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:38:30,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:38:30,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:38:30,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:38:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:30,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:30,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:30,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:38:30,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:38:30,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 11:38:30,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:38:30,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:38:30,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 11:38:30,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:33,937 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:38:33,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594178663] [2020-10-12 11:38:33,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:38:33,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 11:38:33,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133762661] [2020-10-12 11:38:33,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 11:38:33,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:38:33,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 11:38:33,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-12 11:38:33,943 INFO L87 Difference]: Start difference. First operand 1580 states and 2339 transitions. Second operand 19 states. [2020-10-12 11:38:34,312 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-12 11:38:38,640 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 92 [2020-10-12 11:38:39,272 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-12 11:38:40,174 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-12 11:38:48,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:38:48,968 INFO L93 Difference]: Finished difference Result 3123 states and 5328 transitions. [2020-10-12 11:38:48,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:38:48,970 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 839 [2020-10-12 11:38:48,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:38:48,982 INFO L225 Difference]: With dead ends: 3123 [2020-10-12 11:38:48,982 INFO L226 Difference]: Without dead ends: 2276 [2020-10-12 11:38:48,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2020-10-12 11:38:48,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2020-10-12 11:38:49,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 2276. [2020-10-12 11:38:49,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2276 states. [2020-10-12 11:38:49,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 3045 transitions. [2020-10-12 11:38:49,047 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 3045 transitions. Word has length 839 [2020-10-12 11:38:49,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:38:49,048 INFO L479 AbstractCegarLoop]: Abstraction has 2276 states and 3045 transitions. [2020-10-12 11:38:49,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 11:38:49,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 3045 transitions. [2020-10-12 11:38:49,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2020-10-12 11:38:49,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:38:49,061 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:38:49,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:38:49,062 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:38:49,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:38:49,062 INFO L82 PathProgramCache]: Analyzing trace with hash -128918802, now seen corresponding path program 1 times [2020-10-12 11:38:49,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:38:49,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369708321] [2020-10-12 11:38:49,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:38:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:49,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:49,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:54,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:54,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 862 [2020-10-12 11:38:54,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:38:54,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-12 11:38:54,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:54,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:38:54,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 11:38:54,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 517 [2020-10-12 11:38:54,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:56,428 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-10-12 11:38:56,545 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2020-10-12 11:38:56,939 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 41 [2020-10-12 11:38:57,088 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 42 [2020-10-12 11:38:57,293 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 45 [2020-10-12 11:38:57,510 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 43 [2020-10-12 11:38:57,734 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 40 [2020-10-12 11:38:58,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:38:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:58,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:58,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:58,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:38:58,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:38:58,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:38:58,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:58,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:38:58,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:38:58,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:38:58,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:58,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:38:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:58,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:58,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:58,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 11:38:58,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:38:58,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 11:38:58,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:38:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:38:58,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 11:38:58,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:39:02,649 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:39:02,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369708321] [2020-10-12 11:39:02,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:39:02,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 11:39:02,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673257289] [2020-10-12 11:39:02,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:39:02,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:39:02,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:39:02,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:39:02,653 INFO L87 Difference]: Start difference. First operand 2276 states and 3045 transitions. Second operand 17 states. [2020-10-12 11:39:03,167 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-12 11:39:07,599 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-12 11:39:08,438 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-12 11:39:08,596 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-12 11:39:08,910 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 95 [2020-10-12 11:39:09,413 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 94 [2020-10-12 11:39:10,754 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 93 [2020-10-12 11:39:14,697 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 90 [2020-10-12 11:39:15,145 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2020-10-12 11:39:15,377 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 84 [2020-10-12 11:39:20,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:39:20,167 INFO L93 Difference]: Finished difference Result 4329 states and 6367 transitions. [2020-10-12 11:39:20,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:39:20,168 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 846 [2020-10-12 11:39:20,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:39:20,181 INFO L225 Difference]: With dead ends: 4329 [2020-10-12 11:39:20,182 INFO L226 Difference]: Without dead ends: 2786 [2020-10-12 11:39:20,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2020-10-12 11:39:20,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2020-10-12 11:39:20,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2786. [2020-10-12 11:39:20,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2786 states. [2020-10-12 11:39:20,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 3564 transitions. [2020-10-12 11:39:20,250 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 3564 transitions. Word has length 846 [2020-10-12 11:39:20,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:39:20,252 INFO L479 AbstractCegarLoop]: Abstraction has 2786 states and 3564 transitions. [2020-10-12 11:39:20,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 11:39:20,252 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 3564 transitions. [2020-10-12 11:39:20,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2020-10-12 11:39:20,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:39:20,265 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:39:20,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:39:20,265 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:39:20,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:39:20,266 INFO L82 PathProgramCache]: Analyzing trace with hash -2076507161, now seen corresponding path program 1 times [2020-10-12 11:39:20,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:39:20,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114770176] [2020-10-12 11:39:20,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:39:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:39:20,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:21,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:21,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:25,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:39:25,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 874 [2020-10-12 11:39:25,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:39:25,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-12 11:39:25,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:39:25,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 11:39:25,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:39:25,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 868 [2020-10-12 11:39:25,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:39:26,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:39:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:39:26,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:26,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:39:26,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:39:26,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:39:26,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:39:26,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:39:26,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:39:26,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:39:26,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:39:26,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:39:26,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:39:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:39:26,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:26,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:26,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:39:26,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:39:26,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:39:26,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 11:39:26,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:39:26,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:39:26,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:39:26,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:39:26,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:39:26,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:39:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:39:26,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:26,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:26,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:39:26,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:39:26,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:39:26,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 11:39:26,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:39:26,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:39:26,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:39:26,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:39:26,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:39:26,885 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 11:39:26,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114770176] [2020-10-12 11:39:26,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:39:26,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:39:26,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381922325] [2020-10-12 11:39:26,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:39:26,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:39:26,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:39:26,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:39:26,888 INFO L87 Difference]: Start difference. First operand 2786 states and 3564 transitions. Second operand 7 states. [2020-10-12 11:39:35,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:39:35,772 INFO L93 Difference]: Finished difference Result 5729 states and 8060 transitions. [2020-10-12 11:39:35,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 11:39:35,773 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 856 [2020-10-12 11:39:35,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:39:35,793 INFO L225 Difference]: With dead ends: 5729 [2020-10-12 11:39:35,793 INFO L226 Difference]: Without dead ends: 3676 [2020-10-12 11:39:35,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:39:35,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2020-10-12 11:39:35,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3642. [2020-10-12 11:39:35,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3642 states. [2020-10-12 11:39:35,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 4730 transitions. [2020-10-12 11:39:35,906 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 4730 transitions. Word has length 856 [2020-10-12 11:39:35,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:39:35,908 INFO L479 AbstractCegarLoop]: Abstraction has 3642 states and 4730 transitions. [2020-10-12 11:39:35,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:39:35,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 4730 transitions. [2020-10-12 11:39:35,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 872 [2020-10-12 11:39:35,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:39:35,925 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:39:35,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:39:35,925 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:39:35,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:39:35,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1829979976, now seen corresponding path program 1 times [2020-10-12 11:39:35,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:39:35,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011665331] [2020-10-12 11:39:35,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:39:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:39:36,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:36,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:36,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:39,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:41,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:39:41,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 891 [2020-10-12 11:39:41,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:39:41,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 11:39:41,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:39:41,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:39:41,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:39:41,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 11:39:41,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:39:41,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:39:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:39:41,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:41,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:39:41,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:39:41,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:39:41,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:39:41,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:39:41,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:39:41,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:39:41,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:39:41,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:39:41,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:39:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:39:41,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:41,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:41,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:39:41,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:39:41,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:39:41,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 11:39:41,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:39:41,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:39:41,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:39:41,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:39:41,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:39:41,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:39:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:39:41,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:41,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:41,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:39:41,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:39:41,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:39:41,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:39:41,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:39:41,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:39:41,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:39:41,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:39:41,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:39:41,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:39:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:39:41,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:41,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:39:41,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 11:39:41,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:39:41,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 11:39:41,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:39:41,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:39:41,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:39:41,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:39:41,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:39:41,691 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 64 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-12 11:39:41,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011665331] [2020-10-12 11:39:41,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:39:41,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:39:41,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327306623] [2020-10-12 11:39:41,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:39:41,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:39:41,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:39:41,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:39:41,695 INFO L87 Difference]: Start difference. First operand 3642 states and 4730 transitions. Second operand 8 states. [2020-10-12 11:39:52,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:39:52,795 INFO L93 Difference]: Finished difference Result 8369 states and 11680 transitions. [2020-10-12 11:39:52,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 11:39:52,798 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 871 [2020-10-12 11:39:52,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:39:52,822 INFO L225 Difference]: With dead ends: 8369 [2020-10-12 11:39:52,822 INFO L226 Difference]: Without dead ends: 5460 [2020-10-12 11:39:52,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:39:52,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2020-10-12 11:39:52,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 5421. [2020-10-12 11:39:52,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5421 states. [2020-10-12 11:39:52,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5421 states to 5421 states and 6983 transitions. [2020-10-12 11:39:52,959 INFO L78 Accepts]: Start accepts. Automaton has 5421 states and 6983 transitions. Word has length 871 [2020-10-12 11:39:52,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:39:52,960 INFO L479 AbstractCegarLoop]: Abstraction has 5421 states and 6983 transitions. [2020-10-12 11:39:52,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:39:52,960 INFO L276 IsEmpty]: Start isEmpty. Operand 5421 states and 6983 transitions. [2020-10-12 11:39:52,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 922 [2020-10-12 11:39:52,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:39:52,985 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:39:52,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:39:52,985 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:39:52,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:39:52,986 INFO L82 PathProgramCache]: Analyzing trace with hash 311068573, now seen corresponding path program 1 times [2020-10-12 11:39:52,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:39:52,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904810048] [2020-10-12 11:39:52,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:39:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:39:53,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:53,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:54,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:56,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:58,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:39:58,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 943 [2020-10-12 11:39:58,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:39:58,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-12 11:39:58,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:39:58,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 11:39:58,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-12 11:39:58,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 754 [2020-10-12 11:39:58,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:39:59,727 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-10-12 11:40:00,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:40:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:40:00,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:40:00,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:40:00,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:40:00,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:40:00,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:40:00,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:40:00,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:40:00,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:40:00,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:40:00,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:40:00,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:40:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:40:00,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:40:00,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:40:00,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:40:00,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:40:00,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:40:00,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:40:00,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:40:00,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:40:00,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:40:00,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:40:00,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:40:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:40:00,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:40:00,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:40:00,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:40:00,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:40:00,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:40:00,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:40:00,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:40:00,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:40:00,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:40:00,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:40:00,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:40:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:40:00,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:40:00,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:40:00,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 11:40:00,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:40:00,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 11:40:00,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:40:00,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:40:00,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:40:00,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:40:00,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:40:00,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-12 11:40:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:40:00,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:40:00,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:40:00,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 11:40:00,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:40:00,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 11:40:00,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:40:00,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:40:00,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:40:00,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 11:40:00,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:40:06,986 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 94 proven. 4 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-12 11:40:06,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904810048] [2020-10-12 11:40:06,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:40:06,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 11:40:06,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51716884] [2020-10-12 11:40:06,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 11:40:06,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:40:06,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 11:40:06,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-10-12 11:40:06,989 INFO L87 Difference]: Start difference. First operand 5421 states and 6983 transitions. Second operand 19 states. [2020-10-12 11:40:08,139 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-12 11:40:08,313 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-12 11:40:09,180 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-12 11:40:10,467 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-12 11:40:12,773 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-12 11:40:15,520 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-12 11:40:15,693 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-12 11:40:18,521 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-12 11:40:22,938 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-12 11:40:29,555 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-12 11:40:30,950 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2020-10-12 11:40:32,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:40:32,392 INFO L93 Difference]: Finished difference Result 10901 states and 14827 transitions. [2020-10-12 11:40:32,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 11:40:32,393 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 921 [2020-10-12 11:40:32,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:40:32,420 INFO L225 Difference]: With dead ends: 10901 [2020-10-12 11:40:32,420 INFO L226 Difference]: Without dead ends: 6213 [2020-10-12 11:40:32,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=168, Invalid=824, Unknown=0, NotChecked=0, Total=992 [2020-10-12 11:40:32,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6213 states. [2020-10-12 11:40:32,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6213 to 6179. [2020-10-12 11:40:32,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6179 states. [2020-10-12 11:40:32,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6179 states to 6179 states and 7757 transitions. [2020-10-12 11:40:32,554 INFO L78 Accepts]: Start accepts. Automaton has 6179 states and 7757 transitions. Word has length 921 [2020-10-12 11:40:32,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:40:32,555 INFO L479 AbstractCegarLoop]: Abstraction has 6179 states and 7757 transitions. [2020-10-12 11:40:32,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 11:40:32,556 INFO L276 IsEmpty]: Start isEmpty. Operand 6179 states and 7757 transitions. [2020-10-12 11:40:32,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 930 [2020-10-12 11:40:32,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:40:32,580 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:40:32,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:40:32,581 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:40:32,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:40:32,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1709759876, now seen corresponding path program 1 times [2020-10-12 11:40:32,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:40:32,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701849488] [2020-10-12 11:40:32,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:40:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:40:32,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:40:33,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:40:35,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:40:37,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:40:37,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 949 [2020-10-12 11:40:37,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:40:37,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-12 11:40:37,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:40:37,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 11:40:37,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-12 11:40:37,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-12 11:40:37,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:40:39,450 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-12 11:40:40,022 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2020-10-12 11:40:40,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:40:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:40:40,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:40:40,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:40:40,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:40:40,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:40:40,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:40:40,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:40:40,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:40:40,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:40:40,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:40:40,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:40:40,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:40:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:40:40,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:40:40,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:40:40,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:40:40,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:40:40,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:40:40,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:40:40,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:40:40,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:40:40,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:40:40,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:40:40,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:40:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:40:40,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:40:40,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:40:40,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:40:40,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:40:40,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:40:40,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:40:40,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:40:40,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:40:40,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:40:40,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:40:40,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:40:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:40:40,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:40:40,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:40:40,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 11:40:40,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:40:40,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 11:40:40,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:40:40,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:40:40,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:40:40,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 11:40:40,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:40:46,720 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 103 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-12 11:40:46,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701849488] [2020-10-12 11:40:46,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:40:46,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 11:40:46,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068113742] [2020-10-12 11:40:46,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 11:40:46,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:40:46,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 11:40:46,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-10-12 11:40:46,723 INFO L87 Difference]: Start difference. First operand 6179 states and 7757 transitions. Second operand 19 states. [2020-10-12 11:40:47,377 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 11:40:47,548 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-12 11:40:51,725 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 11:40:51,898 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-12 11:40:55,570 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-12 11:40:56,431 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-12 11:40:56,730 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-12 11:40:57,693 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-12 11:40:57,869 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-12 11:40:58,593 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-12 11:41:03,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:41:03,086 INFO L93 Difference]: Finished difference Result 12413 states and 15897 transitions. [2020-10-12 11:41:03,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:41:03,088 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 929 [2020-10-12 11:41:03,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:41:03,123 INFO L225 Difference]: With dead ends: 12413 [2020-10-12 11:41:03,123 INFO L226 Difference]: Without dead ends: 6967 [2020-10-12 11:41:03,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=173, Invalid=819, Unknown=0, NotChecked=0, Total=992 [2020-10-12 11:41:03,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6967 states. [2020-10-12 11:41:03,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6967 to 6948. [2020-10-12 11:41:03,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6948 states. [2020-10-12 11:41:03,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6948 states to 6948 states and 8543 transitions. [2020-10-12 11:41:03,276 INFO L78 Accepts]: Start accepts. Automaton has 6948 states and 8543 transitions. Word has length 929 [2020-10-12 11:41:03,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:41:03,278 INFO L479 AbstractCegarLoop]: Abstraction has 6948 states and 8543 transitions. [2020-10-12 11:41:03,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 11:41:03,278 INFO L276 IsEmpty]: Start isEmpty. Operand 6948 states and 8543 transitions. [2020-10-12 11:41:03,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 931 [2020-10-12 11:41:03,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:41:03,304 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:41:03,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:41:03,305 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:41:03,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:41:03,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1653079438, now seen corresponding path program 1 times [2020-10-12 11:41:03,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:41:03,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573729396] [2020-10-12 11:41:03,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:41:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:03,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:03,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:08,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:08,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 950 [2020-10-12 11:41:08,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:41:08,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 11:41:08,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:08,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:41:08,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-12 11:41:08,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 593 [2020-10-12 11:41:08,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:41:09,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:41:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:09,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:09,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:09,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:41:09,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:41:09,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:41:09,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:09,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:41:09,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:41:09,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:41:09,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:41:09,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:41:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:09,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:09,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:09,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:41:09,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:41:09,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:41:09,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:09,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:41:09,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:41:09,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:41:09,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:41:09,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:41:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:09,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:09,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:09,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:41:09,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:41:09,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:41:09,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:09,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:41:09,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:41:09,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:41:09,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:41:09,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:41:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:09,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:09,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:09,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 11:41:09,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:41:09,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 11:41:09,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:09,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:41:09,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:41:09,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 11:41:09,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:41:13,284 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 104 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-12 11:41:13,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573729396] [2020-10-12 11:41:13,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:41:13,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 11:41:13,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732578537] [2020-10-12 11:41:13,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:41:13,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:41:13,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:41:13,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:41:13,288 INFO L87 Difference]: Start difference. First operand 6948 states and 8543 transitions. Second operand 17 states. [2020-10-12 11:41:14,152 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-12 11:41:14,417 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-12 11:41:14,791 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-12 11:41:15,578 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-12 11:41:16,739 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 11:41:27,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:41:27,380 INFO L93 Difference]: Finished difference Result 13768 states and 17216 transitions. [2020-10-12 11:41:27,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:41:27,382 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 930 [2020-10-12 11:41:27,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:41:27,403 INFO L225 Difference]: With dead ends: 13768 [2020-10-12 11:41:27,403 INFO L226 Difference]: Without dead ends: 7553 [2020-10-12 11:41:27,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=171, Invalid=585, Unknown=0, NotChecked=0, Total=756 [2020-10-12 11:41:27,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7553 states. [2020-10-12 11:41:27,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7553 to 7534. [2020-10-12 11:41:27,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7534 states. [2020-10-12 11:41:27,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7534 states to 7534 states and 9141 transitions. [2020-10-12 11:41:27,542 INFO L78 Accepts]: Start accepts. Automaton has 7534 states and 9141 transitions. Word has length 930 [2020-10-12 11:41:27,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:41:27,543 INFO L479 AbstractCegarLoop]: Abstraction has 7534 states and 9141 transitions. [2020-10-12 11:41:27,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 11:41:27,544 INFO L276 IsEmpty]: Start isEmpty. Operand 7534 states and 9141 transitions. [2020-10-12 11:41:27,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 962 [2020-10-12 11:41:27,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:41:27,685 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:41:27,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:41:27,685 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:41:27,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:41:27,687 INFO L82 PathProgramCache]: Analyzing trace with hash -126461267, now seen corresponding path program 1 times [2020-10-12 11:41:27,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:41:27,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247561257] [2020-10-12 11:41:27,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:41:27,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:27,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:27,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:28,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:32,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:32,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 983 [2020-10-12 11:41:32,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:41:32,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-12 11:41:32,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:32,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:41:32,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-12 11:41:32,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 516 [2020-10-12 11:41:32,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0