/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:32:17,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:32:17,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:32:17,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:32:17,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:32:17,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:32:17,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:32:17,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:32:17,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:32:17,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:32:17,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:32:17,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:32:17,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:32:17,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:32:17,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:32:17,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:32:17,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:32:17,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:32:17,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:32:17,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:32:17,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:32:17,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:32:17,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:32:17,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:32:17,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:32:17,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:32:17,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:32:17,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:32:17,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:32:17,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:32:17,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:32:17,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:32:17,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:32:17,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:32:17,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:32:17,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:32:17,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:32:17,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:32:17,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:32:17,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:32:17,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:32:17,370 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 06:32:17,409 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:32:17,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:32:17,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:32:17,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:32:17,414 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:32:17,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:32:17,415 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:32:17,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:32:17,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:32:17,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:32:17,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:32:17,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:32:17,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:32:17,418 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:32:17,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:32:17,419 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:32:17,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:32:17,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:32:17,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:32:17,419 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:32:17,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:32:17,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:32:17,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:32:17,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:32:17,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:32:17,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:32:17,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:32:17,421 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:32:17,421 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:32:17,421 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 06:32:17,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:32:17,706 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:32:17,711 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:32:17,712 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:32:17,712 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:32:17,713 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label13.c [2020-10-13 06:32:17,775 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7af7cfe6/1ec4ff90106042d282dd4c9db68d60eb/FLAG24ce51853 [2020-10-13 06:32:18,551 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:32:18,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label13.c [2020-10-13 06:32:18,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7af7cfe6/1ec4ff90106042d282dd4c9db68d60eb/FLAG24ce51853 [2020-10-13 06:32:18,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7af7cfe6/1ec4ff90106042d282dd4c9db68d60eb [2020-10-13 06:32:18,666 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:32:18,668 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:32:18,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:32:18,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:32:18,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:32:18,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:32:18" (1/1) ... [2020-10-13 06:32:18,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f77297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:32:18, skipping insertion in model container [2020-10-13 06:32:18,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:32:18" (1/1) ... [2020-10-13 06:32:18,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:32:18,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:32:20,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:32:20,415 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:32:21,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:32:21,263 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:32:21,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:32:21 WrapperNode [2020-10-13 06:32:21,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:32:21,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:32:21,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:32:21,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:32:21,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:32:21" (1/1) ... [2020-10-13 06:32:21,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:32:21" (1/1) ... [2020-10-13 06:32:21,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:32:21" (1/1) ... [2020-10-13 06:32:21,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:32:21" (1/1) ... [2020-10-13 06:32:21,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:32:21" (1/1) ... [2020-10-13 06:32:21,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:32:21" (1/1) ... [2020-10-13 06:32:21,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:32:21" (1/1) ... [2020-10-13 06:32:21,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:32:21,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:32:21,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:32:21,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:32:21,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:32:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:32:21,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:32:21,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:32:21,600 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:32:21,600 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 06:32:21,600 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 06:32:21,601 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 06:32:21,601 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:32:21,601 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:32:21,601 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 06:32:21,601 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 06:32:21,602 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 06:32:21,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:32:21,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:32:21,602 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:32:21,602 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:32:21,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:32:21,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:32:25,798 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:32:25,799 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:32:25,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:32:25 BoogieIcfgContainer [2020-10-13 06:32:25,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:32:25,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:32:25,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:32:25,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:32:25,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:32:18" (1/3) ... [2020-10-13 06:32:25,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61eadb79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:32:25, skipping insertion in model container [2020-10-13 06:32:25,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:32:21" (2/3) ... [2020-10-13 06:32:25,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61eadb79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:32:25, skipping insertion in model container [2020-10-13 06:32:25,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:32:25" (3/3) ... [2020-10-13 06:32:25,829 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label13.c [2020-10-13 06:32:25,840 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:32:25,852 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:32:25,867 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:32:25,896 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:32:25,897 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:32:25,897 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:32:25,897 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:32:25,897 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:32:25,897 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:32:25,897 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:32:25,898 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:32:25,939 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-13 06:32:25,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2020-10-13 06:32:25,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:32:26,000 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] [2020-10-13 06:32:26,001 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:32:26,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:32:26,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1474624405, now seen corresponding path program 1 times [2020-10-13 06:32:26,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:32:26,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349321709] [2020-10-13 06:32:26,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:32:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:32:27,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:32:31,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:32:31,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 804 [2020-10-13 06:32:31,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:32:31,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5151 [2020-10-13 06:32:31,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:32:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 06:32:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:32:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 798 [2020-10-13 06:32:31,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:32:32,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:32:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:32:32,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:32:32,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:32:32,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:32:32,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:32:32,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:32:32,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:32:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:32:32,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:32:32,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:32:32,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:32:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:32:33,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349321709] [2020-10-13 06:32:33,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:32:33,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 06:32:33,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563534193] [2020-10-13 06:32:33,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:32:33,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:32:33,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:32:33,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:32:33,682 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 5 states. [2020-10-13 06:32:46,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:32:46,279 INFO L93 Difference]: Finished difference Result 3521 states and 6821 transitions. [2020-10-13 06:32:46,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 06:32:46,282 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 790 [2020-10-13 06:32:46,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:32:46,344 INFO L225 Difference]: With dead ends: 3521 [2020-10-13 06:32:46,344 INFO L226 Difference]: Without dead ends: 2547 [2020-10-13 06:32:46,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:32:46,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2020-10-13 06:32:46,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2543. [2020-10-13 06:32:46,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2543 states. [2020-10-13 06:32:46,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 4215 transitions. [2020-10-13 06:32:46,566 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 4215 transitions. Word has length 790 [2020-10-13 06:32:46,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:32:46,569 INFO L479 AbstractCegarLoop]: Abstraction has 2543 states and 4215 transitions. [2020-10-13 06:32:46,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:32:46,569 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 4215 transitions. [2020-10-13 06:32:46,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2020-10-13 06:32:46,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:32:46,599 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] [2020-10-13 06:32:46,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:32:46,599 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:32:46,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:32:46,600 INFO L82 PathProgramCache]: Analyzing trace with hash -948049476, now seen corresponding path program 1 times [2020-10-13 06:32:46,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:32:46,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353148071] [2020-10-13 06:32:46,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:32:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:32:47,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:32:47,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:32:50,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:32:51,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:32:51,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 825 [2020-10-13 06:32:51,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:32:51,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-13 06:32:51,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:32:51,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 06:32:51,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:32:51,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 705 [2020-10-13 06:32:51,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:32:53,954 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29 [2020-10-13 06:32:54,349 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 32 [2020-10-13 06:32:54,899 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 37 [2020-10-13 06:32:55,080 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 28 [2020-10-13 06:32:55,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:32:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:32:55,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:32:55,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:32:55,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:32:55,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:32:55,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:32:55,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:32:55,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:32:55,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:32:55,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:32:55,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:32:55,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:32:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:32:55,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:32:55,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:32:55,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:32:55,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:32:55,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:32:55,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:32:55,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:32:55,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:32:55,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:32:55,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:32:59,598 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:32:59,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353148071] [2020-10-13 06:32:59,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:32:59,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 06:32:59,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876395126] [2020-10-13 06:32:59,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 06:32:59,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:32:59,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 06:32:59,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-13 06:32:59,604 INFO L87 Difference]: Start difference. First operand 2543 states and 4215 transitions. Second operand 19 states. [2020-10-13 06:33:02,403 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-13 06:33:04,727 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-13 06:33:13,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:33:13,675 INFO L93 Difference]: Finished difference Result 5782 states and 9842 transitions. [2020-10-13 06:33:13,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:33:13,677 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 809 [2020-10-13 06:33:13,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:33:13,696 INFO L225 Difference]: With dead ends: 5782 [2020-10-13 06:33:13,696 INFO L226 Difference]: Without dead ends: 3245 [2020-10-13 06:33:13,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2020-10-13 06:33:13,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3245 states. [2020-10-13 06:33:13,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3245 to 3239. [2020-10-13 06:33:13,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3239 states. [2020-10-13 06:33:13,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3239 states to 3239 states and 4923 transitions. [2020-10-13 06:33:13,811 INFO L78 Accepts]: Start accepts. Automaton has 3239 states and 4923 transitions. Word has length 809 [2020-10-13 06:33:13,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:33:13,813 INFO L479 AbstractCegarLoop]: Abstraction has 3239 states and 4923 transitions. [2020-10-13 06:33:13,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 06:33:13,814 INFO L276 IsEmpty]: Start isEmpty. Operand 3239 states and 4923 transitions. [2020-10-13 06:33:13,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2020-10-13 06:33:13,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:33:13,829 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 06:33:13,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:33:13,830 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:33:13,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:33:13,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1208674296, now seen corresponding path program 1 times [2020-10-13 06:33:13,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:33:13,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024870897] [2020-10-13 06:33:13,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:33:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:33:13,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:33:15,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:33:18,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:33:18,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 827 [2020-10-13 06:33:18,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:33:18,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-13 06:33:18,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:33:18,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:33:18,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:33:18,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 06:33:18,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:33:19,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:33:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:33:19,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:33:19,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:33:19,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:33:19,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:33:19,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:33:19,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:33:19,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:33:19,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:33:19,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:33:19,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:33:19,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:33:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:33:19,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:33:19,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:33:19,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:33:19,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:33:19,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 06:33:19,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:33:19,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:33:19,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:33:19,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 06:33:19,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:33:19,583 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:33:19,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024870897] [2020-10-13 06:33:19,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:33:19,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:33:19,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746290913] [2020-10-13 06:33:19,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:33:19,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:33:19,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:33:19,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:33:19,586 INFO L87 Difference]: Start difference. First operand 3239 states and 4923 transitions. Second operand 7 states. [2020-10-13 06:33:30,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:33:30,158 INFO L93 Difference]: Finished difference Result 9159 states and 14447 transitions. [2020-10-13 06:33:30,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:33:30,158 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 811 [2020-10-13 06:33:30,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:33:30,198 INFO L225 Difference]: With dead ends: 9159 [2020-10-13 06:33:30,199 INFO L226 Difference]: Without dead ends: 5926 [2020-10-13 06:33:30,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:33:30,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5926 states. [2020-10-13 06:33:30,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5926 to 5866. [2020-10-13 06:33:30,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5866 states. [2020-10-13 06:33:30,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5866 states to 5866 states and 8334 transitions. [2020-10-13 06:33:30,410 INFO L78 Accepts]: Start accepts. Automaton has 5866 states and 8334 transitions. Word has length 811 [2020-10-13 06:33:30,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:33:30,411 INFO L479 AbstractCegarLoop]: Abstraction has 5866 states and 8334 transitions. [2020-10-13 06:33:30,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:33:30,411 INFO L276 IsEmpty]: Start isEmpty. Operand 5866 states and 8334 transitions. [2020-10-13 06:33:30,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 874 [2020-10-13 06:33:30,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:33:30,442 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:33:30,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:33:30,442 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:33:30,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:33:30,443 INFO L82 PathProgramCache]: Analyzing trace with hash 842595445, now seen corresponding path program 1 times [2020-10-13 06:33:30,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:33:30,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713297329] [2020-10-13 06:33:30,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:33:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:33:30,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:33:30,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:33:32,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:33:34,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:33:35,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:33:35,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 891 [2020-10-13 06:33:35,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:33:35,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 06:33:35,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:33:35,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:33:35,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-13 06:33:35,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 06:33:35,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:33:35,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:33:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:33:35,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:33:35,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:33:35,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:33:35,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:33:35,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:33:35,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:33:35,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:33:35,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:33:35,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:33:35,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:33:35,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:33:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:33:35,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:33:36,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:33:36,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 06:33:36,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:33:36,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 06:33:36,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:33:36,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:33:36,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:33:36,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 06:33:36,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:33:36,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 06:33:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:33:36,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:33:36,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:33:36,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:33:36,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:33:36,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 06:33:36,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:33:36,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:33:36,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:33:36,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 06:33:36,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:33:36,738 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:33:36,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713297329] [2020-10-13 06:33:36,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:33:36,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:33:36,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589407269] [2020-10-13 06:33:36,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:33:36,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:33:36,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:33:36,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:33:36,743 INFO L87 Difference]: Start difference. First operand 5866 states and 8334 transitions. Second operand 7 states. [2020-10-13 06:33:51,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:33:51,292 INFO L93 Difference]: Finished difference Result 13629 states and 19351 transitions. [2020-10-13 06:33:51,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:33:51,294 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 873 [2020-10-13 06:33:51,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:33:51,341 INFO L225 Difference]: With dead ends: 13629 [2020-10-13 06:33:51,341 INFO L226 Difference]: Without dead ends: 7769 [2020-10-13 06:33:51,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:33:51,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7769 states. [2020-10-13 06:33:51,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7769 to 7743. [2020-10-13 06:33:51,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7743 states. [2020-10-13 06:33:51,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 10522 transitions. [2020-10-13 06:33:51,676 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 10522 transitions. Word has length 873 [2020-10-13 06:33:51,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:33:51,676 INFO L479 AbstractCegarLoop]: Abstraction has 7743 states and 10522 transitions. [2020-10-13 06:33:51,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:33:51,676 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 10522 transitions. [2020-10-13 06:33:51,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 898 [2020-10-13 06:33:51,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:33:51,709 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:33:51,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:33:51,710 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:33:51,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:33:51,711 INFO L82 PathProgramCache]: Analyzing trace with hash 292363276, now seen corresponding path program 1 times [2020-10-13 06:33:51,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:33:51,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359982504] [2020-10-13 06:33:51,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:33:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:33:51,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:33:52,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:33:56,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:33:56,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 913 [2020-10-13 06:33:56,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:33:56,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5121 [2020-10-13 06:33:56,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:33:56,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:33:56,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:33:56,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 06:33:56,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:33:57,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:33:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:33:57,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:33:57,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:33:57,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:33:57,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:33:57,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:33:57,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:33:57,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:33:57,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:33:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:33:57,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:33:57,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:33:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:33:57,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:33:57,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:33:57,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 06:33:57,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:33:57,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-13 06:33:57,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:33:57,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:33:57,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:33:57,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 06:33:57,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:33:57,755 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:33:57,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359982504] [2020-10-13 06:33:57,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:33:57,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 06:33:57,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36395319] [2020-10-13 06:33:57,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:33:57,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:33:57,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:33:57,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:33:57,758 INFO L87 Difference]: Start difference. First operand 7743 states and 10522 transitions. Second operand 8 states. [2020-10-13 06:34:09,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:34:09,162 INFO L93 Difference]: Finished difference Result 22842 states and 32879 transitions. [2020-10-13 06:34:09,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:34:09,165 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 897 [2020-10-13 06:34:09,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:34:09,241 INFO L225 Difference]: With dead ends: 22842 [2020-10-13 06:34:09,241 INFO L226 Difference]: Without dead ends: 15109 [2020-10-13 06:34:09,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:34:09,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15109 states. [2020-10-13 06:34:09,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15109 to 14928. [2020-10-13 06:34:09,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14928 states. [2020-10-13 06:34:09,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14928 states to 14928 states and 20096 transitions. [2020-10-13 06:34:09,663 INFO L78 Accepts]: Start accepts. Automaton has 14928 states and 20096 transitions. Word has length 897 [2020-10-13 06:34:09,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:34:09,663 INFO L479 AbstractCegarLoop]: Abstraction has 14928 states and 20096 transitions. [2020-10-13 06:34:09,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:34:09,664 INFO L276 IsEmpty]: Start isEmpty. Operand 14928 states and 20096 transitions. [2020-10-13 06:34:09,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 906 [2020-10-13 06:34:09,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:34:09,716 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:34:09,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:34:09,717 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:34:09,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:34:09,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1642966069, now seen corresponding path program 1 times [2020-10-13 06:34:09,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:34:09,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056245787] [2020-10-13 06:34:09,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:34:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:34:09,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:34:09,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:34:10,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:34:14,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:34:14,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 923 [2020-10-13 06:34:14,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:34:14,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 06:34:14,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:34:14,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:34:14,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-13 06:34:14,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 06:34:14,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:34:14,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:34:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:34:14,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:34:14,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:34:14,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:34:14,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:34:14,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:34:14,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:34:14,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:34:14,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:34:14,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:34:14,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:34:14,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:34:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:34:15,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:34:15,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:34:15,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 06:34:15,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:34:15,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 06:34:15,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:34:15,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:34:15,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:34:15,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 06:34:15,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:34:15,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 06:34:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:34:15,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:34:15,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:34:15,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 06:34:15,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:34:15,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 06:34:15,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:34:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:34:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:34:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 06:34:15,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:34:15,450 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:34:15,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056245787] [2020-10-13 06:34:15,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:34:15,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:34:15,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229288217] [2020-10-13 06:34:15,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:34:15,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:34:15,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:34:15,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:34:15,453 INFO L87 Difference]: Start difference. First operand 14928 states and 20096 transitions. Second operand 7 states. [2020-10-13 06:34:26,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:34:26,661 INFO L93 Difference]: Finished difference Result 36912 states and 51994 transitions. [2020-10-13 06:34:26,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:34:26,662 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 905 [2020-10-13 06:34:26,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:34:26,746 INFO L225 Difference]: With dead ends: 36912 [2020-10-13 06:34:26,746 INFO L226 Difference]: Without dead ends: 21994 [2020-10-13 06:34:26,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:34:26,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21994 states. [2020-10-13 06:34:27,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21994 to 21915. [2020-10-13 06:34:27,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21915 states. [2020-10-13 06:34:27,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21915 states to 21915 states and 29057 transitions. [2020-10-13 06:34:27,346 INFO L78 Accepts]: Start accepts. Automaton has 21915 states and 29057 transitions. Word has length 905 [2020-10-13 06:34:27,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:34:27,347 INFO L479 AbstractCegarLoop]: Abstraction has 21915 states and 29057 transitions. [2020-10-13 06:34:27,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:34:27,347 INFO L276 IsEmpty]: Start isEmpty. Operand 21915 states and 29057 transitions. [2020-10-13 06:34:27,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 948 [2020-10-13 06:34:27,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:34:27,423 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:34:27,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:34:27,424 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:34:27,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:34:27,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1074645127, now seen corresponding path program 1 times [2020-10-13 06:34:27,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:34:27,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882750329] [2020-10-13 06:34:27,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:34:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:34:27,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:34:27,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:34:29,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:34:32,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:34:32,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:34:32,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 965 [2020-10-13 06:34:32,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:34:32,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5116 [2020-10-13 06:34:32,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:34:32,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:34:32,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:34:32,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 06:34:32,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:34:32,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:34:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:34:32,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:34:32,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:34:32,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:34:32,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:34:32,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:34:32,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:34:32,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:34:32,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:34:32,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:34:32,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:34:32,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:34:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:34:32,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:34:32,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:34:32,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:34:32,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:34:32,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 06:34:32,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:34:32,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:34:32,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:34:32,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:34:32,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:34:33,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 06:34:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:34:33,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:34:33,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:34:33,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 06:34:33,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:34:33,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 06:34:33,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:34:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:34:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-13 06:34:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:34:33,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:34:33,536 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 151 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 06:34:33,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882750329] [2020-10-13 06:34:33,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:34:33,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:34:33,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996562037] [2020-10-13 06:34:33,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:34:33,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:34:33,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:34:33,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:34:33,539 INFO L87 Difference]: Start difference. First operand 21915 states and 29057 transitions. Second operand 7 states. [2020-10-13 06:34:43,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:34:43,761 INFO L93 Difference]: Finished difference Result 52318 states and 73783 transitions. [2020-10-13 06:34:43,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 06:34:43,762 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 947 [2020-10-13 06:34:43,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:34:43,877 INFO L225 Difference]: With dead ends: 52318 [2020-10-13 06:34:43,877 INFO L226 Difference]: Without dead ends: 30413 [2020-10-13 06:34:43,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:34:43,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30413 states. [2020-10-13 06:34:44,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30413 to 29860. [2020-10-13 06:34:44,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29860 states. [2020-10-13 06:34:44,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29860 states to 29860 states and 39081 transitions. [2020-10-13 06:34:44,680 INFO L78 Accepts]: Start accepts. Automaton has 29860 states and 39081 transitions. Word has length 947 [2020-10-13 06:34:44,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:34:44,681 INFO L479 AbstractCegarLoop]: Abstraction has 29860 states and 39081 transitions. [2020-10-13 06:34:44,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:34:44,681 INFO L276 IsEmpty]: Start isEmpty. Operand 29860 states and 39081 transitions. [2020-10-13 06:34:44,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2020-10-13 06:34:44,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:34:44,743 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:34:44,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:34:44,743 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:34:44,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:34:44,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1199530198, now seen corresponding path program 1 times [2020-10-13 06:34:44,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:34:44,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518313211] [2020-10-13 06:34:44,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:34:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:34:44,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:34:45,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:34:45,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:34:49,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:34:49,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 986 [2020-10-13 06:34:49,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:34:49,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-13 06:34:49,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:34:49,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:34:49,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:34:49,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 06:34:49,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:34:50,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:34:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:34:50,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:34:50,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:34:50,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:34:50,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:34:50,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:34:50,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:34:50,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:34:50,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:34:50,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:34:50,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:34:50,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:34:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:34:50,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:34:50,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:34:50,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:34:50,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:34:50,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:34:50,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:34:50,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:34:50,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:34:50,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:34:50,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:34:50,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:34:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:34:50,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:34:50,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:34:50,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:34:50,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:34:50,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:34:50,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:34:50,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:34:50,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:34:50,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:34:50,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:34:50,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:34:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:34:50,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:34:50,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:34:50,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 06:34:50,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:34:50,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-13 06:34:50,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:34:50,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:34:50,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:34:50,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-13 06:34:50,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:34:50,848 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:34:50,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518313211] [2020-10-13 06:34:50,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:34:50,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:34:50,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712128885] [2020-10-13 06:34:50,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:34:50,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:34:50,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:34:50,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:34:50,851 INFO L87 Difference]: Start difference. First operand 29860 states and 39081 transitions. Second operand 7 states. [2020-10-13 06:35:08,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:35:08,225 INFO L93 Difference]: Finished difference Result 103354 states and 144386 transitions. [2020-10-13 06:35:08,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:35:08,226 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 966 [2020-10-13 06:35:08,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:35:08,457 INFO L225 Difference]: With dead ends: 103354 [2020-10-13 06:35:08,457 INFO L226 Difference]: Without dead ends: 73504 [2020-10-13 06:35:08,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:35:08,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73504 states. [2020-10-13 06:35:10,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73504 to 73341. [2020-10-13 06:35:10,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73341 states. [2020-10-13 06:35:10,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73341 states to 73341 states and 98389 transitions. [2020-10-13 06:35:10,257 INFO L78 Accepts]: Start accepts. Automaton has 73341 states and 98389 transitions. Word has length 966 [2020-10-13 06:35:10,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:35:10,257 INFO L479 AbstractCegarLoop]: Abstraction has 73341 states and 98389 transitions. [2020-10-13 06:35:10,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:35:10,258 INFO L276 IsEmpty]: Start isEmpty. Operand 73341 states and 98389 transitions. [2020-10-13 06:35:10,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 972 [2020-10-13 06:35:10,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:35:10,391 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:35:10,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:35:10,392 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:35:10,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:35:10,392 INFO L82 PathProgramCache]: Analyzing trace with hash 579178780, now seen corresponding path program 1 times [2020-10-13 06:35:10,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:35:10,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762061965] [2020-10-13 06:35:10,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:35:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:35:10,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:35:10,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:35:13,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:35:14,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:35:15,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:35:15,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 991 [2020-10-13 06:35:15,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:35:15,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-13 06:35:15,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:35:15,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:35:15,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:35:15,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-13 06:35:15,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:35:15,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:35:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:35:15,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:35:15,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:35:15,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:35:15,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:35:15,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:35:15,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:35:15,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:35:15,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:35:15,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:35:15,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:35:15,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:35:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:35:15,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:35:15,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:35:15,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:35:15,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:35:15,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:35:15,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:35:15,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:35:15,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:35:15,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:35:15,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:35:15,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:35:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:35:15,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:35:15,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:35:15,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:35:15,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:35:15,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:35:15,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:35:15,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:35:15,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:35:15,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:35:15,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:35:15,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:35:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:35:15,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:35:15,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:35:15,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 06:35:15,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:35:15,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-13 06:35:15,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:35:15,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:35:15,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:35:15,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-13 06:35:15,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:35:16,331 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:35:16,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762061965] [2020-10-13 06:35:16,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:35:16,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:35:16,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722945361] [2020-10-13 06:35:16,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:35:16,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:35:16,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:35:16,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:35:16,334 INFO L87 Difference]: Start difference. First operand 73341 states and 98389 transitions. Second operand 7 states. [2020-10-13 06:35:32,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:35:32,475 INFO L93 Difference]: Finished difference Result 192473 states and 267610 transitions. [2020-10-13 06:35:32,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:35:32,476 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 971 [2020-10-13 06:35:32,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:35:32,889 INFO L225 Difference]: With dead ends: 192473 [2020-10-13 06:35:32,889 INFO L226 Difference]: Without dead ends: 119142 [2020-10-13 06:35:33,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:35:33,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119142 states. [2020-10-13 06:35:34,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119142 to 118317. [2020-10-13 06:35:34,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118317 states. [2020-10-13 06:35:35,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118317 states to 118317 states and 158065 transitions. [2020-10-13 06:35:35,112 INFO L78 Accepts]: Start accepts. Automaton has 118317 states and 158065 transitions. Word has length 971 [2020-10-13 06:35:35,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:35:35,112 INFO L479 AbstractCegarLoop]: Abstraction has 118317 states and 158065 transitions. [2020-10-13 06:35:35,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:35:35,113 INFO L276 IsEmpty]: Start isEmpty. Operand 118317 states and 158065 transitions. [2020-10-13 06:35:35,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1141 [2020-10-13 06:35:35,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:35:35,295 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:35:35,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:35:35,295 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:35:35,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:35:35,296 INFO L82 PathProgramCache]: Analyzing trace with hash 354121134, now seen corresponding path program 1 times [2020-10-13 06:35:35,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:35:35,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664572191] [2020-10-13 06:35:35,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:35:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:35:35,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:35:35,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:35:35,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:35:36,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:35:37,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:35:39,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:35:40,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:35:40,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1164 [2020-10-13 06:35:40,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:35:40,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-13 06:35:40,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:35:40,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:35:40,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 275 [2020-10-13 06:35:40,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 06:35:40,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:35:40,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:35:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:35:40,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:35:40,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:35:40,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:35:40,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:35:40,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:35:40,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:35:40,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:35:40,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:35:40,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:35:40,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:35:40,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:35:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:35:40,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:35:40,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:35:40,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:35:40,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:35:40,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:35:40,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:35:40,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:35:40,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:35:40,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:35:40,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:35:40,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:35:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:35:40,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:35:40,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:35:40,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:35:40,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:35:40,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:35:40,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:35:40,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:35:40,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:35:40,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:35:40,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:35:40,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:35:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:35:40,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:35:40,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:35:40,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 06:35:40,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:35:40,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 06:35:40,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:35:40,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:35:40,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:35:40,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 06:35:40,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:35:40,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-10-13 06:35:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:35:40,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:35:40,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:35:40,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 06:35:40,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:35:40,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 06:35:40,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:35:40,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:35:40,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:35:40,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 06:35:40,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:35:40,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-10-13 06:35:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:35:40,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:35:40,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:35:40,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:35:40,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:35:40,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:35:40,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:35:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:35:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 06:35:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:35:40,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:35:41,708 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 429 proven. 30 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-13 06:35:41,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664572191] [2020-10-13 06:35:41,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:35:41,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:35:41,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484370211] [2020-10-13 06:35:41,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:35:41,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:35:41,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:35:41,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:35:41,711 INFO L87 Difference]: Start difference. First operand 118317 states and 158065 transitions. Second operand 7 states.