/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/Problem12_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:17:42,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:17:42,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:17:42,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:17:42,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:17:42,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:17:42,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:17:42,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:17:42,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:17:42,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:17:42,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:17:42,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:17:42,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:17:42,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:17:42,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:17:42,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:17:42,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:17:42,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:17:42,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:17:42,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:17:42,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:17:42,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:17:42,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:17:42,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:17:42,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:17:42,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:17:42,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:17:42,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:17:42,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:17:42,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:17:42,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:17:42,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:17:42,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:17:42,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:17:42,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:17:42,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:17:42,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:17:42,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:17:42,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:17:42,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:17:42,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:17:42,325 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:17:42,366 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:17:42,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:17:42,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:17:42,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:17:42,369 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:17:42,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:17:42,370 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:17:42,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:17:42,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:17:42,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:17:42,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:17:42,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:17:42,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:17:42,371 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:17:42,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:17:42,371 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:17:42,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:17:42,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:17:42,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:17:42,372 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:17:42,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:17:42,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:17:42,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:17:42,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:17:42,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:17:42,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:17:42,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:17:42,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:17:42,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:17:42,374 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:17:42,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:17:42,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:17:42,754 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:17:42,756 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:17:42,757 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:17:42,758 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label14.c [2020-10-13 08:17:42,838 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28241d796/7f2d4ae48c7c4a28918fe9c0e8bfe016/FLAG1830cc16f [2020-10-13 08:17:43,689 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:17:43,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label14.c [2020-10-13 08:17:43,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28241d796/7f2d4ae48c7c4a28918fe9c0e8bfe016/FLAG1830cc16f [2020-10-13 08:17:44,243 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28241d796/7f2d4ae48c7c4a28918fe9c0e8bfe016 [2020-10-13 08:17:44,257 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:17:44,260 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:17:44,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:17:44,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:17:44,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:17:44,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:17:44" (1/1) ... [2020-10-13 08:17:44,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c4e209a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:17:44, skipping insertion in model container [2020-10-13 08:17:44,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:17:44" (1/1) ... [2020-10-13 08:17:44,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:17:44,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:17:46,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:17:46,060 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:17:46,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:17:46,860 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:17:46,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:17:46 WrapperNode [2020-10-13 08:17:46,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:17:46,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:17:46,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:17:46,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:17:46,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:17:46" (1/1) ... [2020-10-13 08:17:46,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:17:46" (1/1) ... [2020-10-13 08:17:46,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:17:46" (1/1) ... [2020-10-13 08:17:46,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:17:46" (1/1) ... [2020-10-13 08:17:47,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:17:46" (1/1) ... [2020-10-13 08:17:47,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:17:46" (1/1) ... [2020-10-13 08:17:47,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:17:46" (1/1) ... [2020-10-13 08:17:47,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:17:47,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:17:47,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:17:47,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:17:47,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:17:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:17:47,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:17:47,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:17:47,329 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:17:47,329 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:17:47,329 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:17:47,329 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:17:47,330 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:17:47,331 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:17:47,331 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:17:47,331 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:17:47,331 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:17:47,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:17:47,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:17:47,332 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:17:47,332 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:17:47,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:17:47,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:17:52,558 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:17:52,558 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:17:52,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:17:52 BoogieIcfgContainer [2020-10-13 08:17:52,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:17:52,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:17:52,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:17:52,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:17:52,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:17:44" (1/3) ... [2020-10-13 08:17:52,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11245ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:17:52, skipping insertion in model container [2020-10-13 08:17:52,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:17:46" (2/3) ... [2020-10-13 08:17:52,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11245ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:17:52, skipping insertion in model container [2020-10-13 08:17:52,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:17:52" (3/3) ... [2020-10-13 08:17:52,587 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label14.c [2020-10-13 08:17:52,600 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:17:52,614 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:17:52,633 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:17:52,669 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:17:52,669 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:17:52,669 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:17:52,670 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:17:52,670 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:17:52,670 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:17:52,670 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:17:52,670 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:17:52,717 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:17:52,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 08:17:52,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:17:52,732 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] [2020-10-13 08:17:52,733 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:17:52,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:17:52,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1880403285, now seen corresponding path program 1 times [2020-10-13 08:17:52,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:17:52,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619294701] [2020-10-13 08:17:52,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:17:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:53,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:53,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:53,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 08:17:53,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:53,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 501 [2020-10-13 08:17:53,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:53,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:17:53,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:17:53,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 08:17:53,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:17:53,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:17:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:53,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:53,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:53,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:17:53,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:53,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:17:53,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:53,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:17:53,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:53,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:17:53,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:17:53,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:17:53,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619294701] [2020-10-13 08:17:53,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:17:53,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 08:17:53,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53209181] [2020-10-13 08:17:53,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:17:53,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:17:53,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:17:53,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:17:53,734 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-13 08:18:06,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:18:06,416 INFO L93 Difference]: Finished difference Result 3253 states and 6293 transitions. [2020-10-13 08:18:06,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:18:06,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-13 08:18:06,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:18:06,474 INFO L225 Difference]: With dead ends: 3253 [2020-10-13 08:18:06,475 INFO L226 Difference]: Without dead ends: 2346 [2020-10-13 08:18:06,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:18:06,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2020-10-13 08:18:06,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2331. [2020-10-13 08:18:06,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2331 states. [2020-10-13 08:18:06,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3834 transitions. [2020-10-13 08:18:06,682 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3834 transitions. Word has length 54 [2020-10-13 08:18:06,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:18:06,683 INFO L479 AbstractCegarLoop]: Abstraction has 2331 states and 3834 transitions. [2020-10-13 08:18:06,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:18:06,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3834 transitions. [2020-10-13 08:18:06,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 08:18:06,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:18:06,690 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:18:06,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:18:06,691 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:18:06,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:18:06,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1159987324, now seen corresponding path program 1 times [2020-10-13 08:18:06,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:18:06,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616006064] [2020-10-13 08:18:06,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:18:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:06,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:07,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:07,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:07,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:07,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 08:18:07,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:18:07,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1202 [2020-10-13 08:18:07,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:07,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:07,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 08:18:07,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 08:18:07,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:08,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:18:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:08,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:08,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:08,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:18:08,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:08,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:18:08,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:08,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:08,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:08,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:08,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:08,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:18:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:08,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:08,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:08,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 08:18:08,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:08,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 08:18:08,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:08,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:08,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:08,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 08:18:08,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:18:08,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616006064] [2020-10-13 08:18:08,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:18:08,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:18:08,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117106426] [2020-10-13 08:18:08,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:18:08,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:18:08,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:18:08,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:18:08,252 INFO L87 Difference]: Start difference. First operand 2331 states and 3834 transitions. Second operand 5 states. [2020-10-13 08:18:17,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:18:17,397 INFO L93 Difference]: Finished difference Result 7013 states and 11672 transitions. [2020-10-13 08:18:17,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:18:17,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-13 08:18:17,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:18:17,428 INFO L225 Difference]: With dead ends: 7013 [2020-10-13 08:18:17,429 INFO L226 Difference]: Without dead ends: 4688 [2020-10-13 08:18:17,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:18:17,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4688 states. [2020-10-13 08:18:17,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4688 to 4673. [2020-10-13 08:18:17,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4673 states. [2020-10-13 08:18:17,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 7592 transitions. [2020-10-13 08:18:17,569 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 7592 transitions. Word has length 132 [2020-10-13 08:18:17,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:18:17,570 INFO L479 AbstractCegarLoop]: Abstraction has 4673 states and 7592 transitions. [2020-10-13 08:18:17,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:18:17,571 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 7592 transitions. [2020-10-13 08:18:17,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 08:18:17,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:18:17,575 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:18:17,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:18:17,576 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:18:17,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:18:17,576 INFO L82 PathProgramCache]: Analyzing trace with hash -3349156, now seen corresponding path program 1 times [2020-10-13 08:18:17,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:18:17,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379256844] [2020-10-13 08:18:17,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:18:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:17,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:17,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:18,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:18,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:18,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 08:18:18,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:18:18,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1206 [2020-10-13 08:18:18,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:18,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:18,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 08:18:18,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 08:18:18,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:18,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:18:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:18,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:18,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:18,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:18:18,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:18,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:18:18,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:18,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:18,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:18,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:18,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:18,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:18:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:19,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:19,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:19,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:18:19,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:19,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 08:18:19,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:19,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:19,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:19,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 08:18:19,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:19,251 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:18:19,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379256844] [2020-10-13 08:18:19,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:18:19,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:18:19,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191016386] [2020-10-13 08:18:19,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:18:19,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:18:19,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:18:19,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:18:19,256 INFO L87 Difference]: Start difference. First operand 4673 states and 7592 transitions. Second operand 5 states. [2020-10-13 08:18:30,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:18:30,712 INFO L93 Difference]: Finished difference Result 14015 states and 23229 transitions. [2020-10-13 08:18:30,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:18:30,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-13 08:18:30,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:18:30,764 INFO L225 Difference]: With dead ends: 14015 [2020-10-13 08:18:30,765 INFO L226 Difference]: Without dead ends: 9348 [2020-10-13 08:18:30,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:18:30,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9348 states. [2020-10-13 08:18:31,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9348 to 9334. [2020-10-13 08:18:31,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9334 states. [2020-10-13 08:18:31,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9334 states to 9334 states and 13959 transitions. [2020-10-13 08:18:31,035 INFO L78 Accepts]: Start accepts. Automaton has 9334 states and 13959 transitions. Word has length 148 [2020-10-13 08:18:31,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:18:31,036 INFO L479 AbstractCegarLoop]: Abstraction has 9334 states and 13959 transitions. [2020-10-13 08:18:31,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:18:31,036 INFO L276 IsEmpty]: Start isEmpty. Operand 9334 states and 13959 transitions. [2020-10-13 08:18:31,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-13 08:18:31,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:18:31,042 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, 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] [2020-10-13 08:18:31,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:18:31,043 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:18:31,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:18:31,043 INFO L82 PathProgramCache]: Analyzing trace with hash 624576318, now seen corresponding path program 1 times [2020-10-13 08:18:31,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:18:31,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374685478] [2020-10-13 08:18:31,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:18:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:31,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:31,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:31,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:32,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:34,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:34,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-13 08:18:34,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:18:34,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3169 [2020-10-13 08:18:34,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:34,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:34,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-13 08:18:34,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 08:18:34,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-13 08:18:34,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:18:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:34,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:34,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:34,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:18:34,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:34,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:18:34,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:34,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:34,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:34,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:34,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:34,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:18:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:34,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:34,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:34,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 08:18:34,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:34,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:18:34,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:34,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:34,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:34,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:34,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:34,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 08:18:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:34,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:34,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:34,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 08:18:34,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:34,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 08:18:34,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:34,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:34,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:34,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:18:34,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:34,568 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 08:18:34,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374685478] [2020-10-13 08:18:34,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:18:34,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:18:34,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980776608] [2020-10-13 08:18:34,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:18:34,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:18:34,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:18:34,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:18:34,571 INFO L87 Difference]: Start difference. First operand 9334 states and 13959 transitions. Second operand 5 states. [2020-10-13 08:18:46,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:18:46,134 INFO L93 Difference]: Finished difference Result 23329 states and 36169 transitions. [2020-10-13 08:18:46,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:18:46,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2020-10-13 08:18:46,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:18:46,202 INFO L225 Difference]: With dead ends: 23329 [2020-10-13 08:18:46,203 INFO L226 Difference]: Without dead ends: 14001 [2020-10-13 08:18:46,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:18:46,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14001 states. [2020-10-13 08:18:46,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14001 to 13993. [2020-10-13 08:18:46,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13993 states. [2020-10-13 08:18:46,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13993 states to 13993 states and 19491 transitions. [2020-10-13 08:18:46,626 INFO L78 Accepts]: Start accepts. Automaton has 13993 states and 19491 transitions. Word has length 203 [2020-10-13 08:18:46,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:18:46,627 INFO L479 AbstractCegarLoop]: Abstraction has 13993 states and 19491 transitions. [2020-10-13 08:18:46,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:18:46,628 INFO L276 IsEmpty]: Start isEmpty. Operand 13993 states and 19491 transitions. [2020-10-13 08:18:46,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-13 08:18:46,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:18:46,637 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:18:46,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:18:46,638 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:18:46,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:18:46,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1850457444, now seen corresponding path program 1 times [2020-10-13 08:18:46,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:18:46,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477767097] [2020-10-13 08:18:46,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:18:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:46,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:46,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:48,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:48,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:48,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-13 08:18:48,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:18:48,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2182 [2020-10-13 08:18:48,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:48,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:48,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-10-13 08:18:48,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 08:18:48,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:49,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:18:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:49,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:49,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:49,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:18:49,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:49,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:18:49,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:49,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:49,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:49,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:18:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:49,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:49,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:49,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-13 08:18:49,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:49,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-13 08:18:49,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:49,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:49,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:49,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-13 08:18:49,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:49,454 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:18:49,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477767097] [2020-10-13 08:18:49,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:18:49,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:18:49,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566058769] [2020-10-13 08:18:49,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:18:49,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:18:49,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:18:49,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:18:49,459 INFO L87 Difference]: Start difference. First operand 13993 states and 19491 transitions. Second operand 5 states. [2020-10-13 08:18:57,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:18:57,560 INFO L93 Difference]: Finished difference Result 28008 states and 39075 transitions. [2020-10-13 08:18:57,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:18:57,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 244 [2020-10-13 08:18:57,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:18:57,623 INFO L225 Difference]: With dead ends: 28008 [2020-10-13 08:18:57,624 INFO L226 Difference]: Without dead ends: 14001 [2020-10-13 08:18:57,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:18:57,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14001 states. [2020-10-13 08:18:58,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14001 to 13993. [2020-10-13 08:18:58,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13993 states. [2020-10-13 08:18:58,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13993 states to 13993 states and 19485 transitions. [2020-10-13 08:18:58,113 INFO L78 Accepts]: Start accepts. Automaton has 13993 states and 19485 transitions. Word has length 244 [2020-10-13 08:18:58,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:18:58,114 INFO L479 AbstractCegarLoop]: Abstraction has 13993 states and 19485 transitions. [2020-10-13 08:18:58,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:18:58,114 INFO L276 IsEmpty]: Start isEmpty. Operand 13993 states and 19485 transitions. [2020-10-13 08:18:58,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-13 08:18:58,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:18:58,127 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, 2, 2, 2, 2, 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] [2020-10-13 08:18:58,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:18:58,127 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:18:58,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:18:58,128 INFO L82 PathProgramCache]: Analyzing trace with hash -167325620, now seen corresponding path program 1 times [2020-10-13 08:18:58,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:18:58,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223408368] [2020-10-13 08:18:58,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:18:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:58,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:58,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:58,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:59,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:00,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:00,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-13 08:19:00,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:19:00,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2597 [2020-10-13 08:19:00,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:00,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:00,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:19:00,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:19:00,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:00,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:19:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:00,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:00,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:00,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:19:00,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:00,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:19:00,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:00,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:00,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:00,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:00,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:00,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:19:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:00,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:00,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:00,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:19:00,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:00,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 08:19:00,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:00,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:19:00,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:00,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:19:00,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:01,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 08:19:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:01,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:01,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:01,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:01,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 08:19:01,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:19:01,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-13 08:19:01,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:01,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:01,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:19:01,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-13 08:19:01,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:02,568 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:19:02,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223408368] [2020-10-13 08:19:02,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:19:02,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:19:02,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571555225] [2020-10-13 08:19:02,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:19:02,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:19:02,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:19:02,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:19:02,575 INFO L87 Difference]: Start difference. First operand 13993 states and 19485 transitions. Second operand 6 states. [2020-10-13 08:19:13,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:19:13,424 INFO L93 Difference]: Finished difference Result 28102 states and 39232 transitions. [2020-10-13 08:19:13,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:19:13,427 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 283 [2020-10-13 08:19:13,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:19:13,494 INFO L225 Difference]: With dead ends: 28102 [2020-10-13 08:19:13,494 INFO L226 Difference]: Without dead ends: 14068 [2020-10-13 08:19:13,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:19:13,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14068 states. [2020-10-13 08:19:14,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14068 to 13993. [2020-10-13 08:19:14,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13993 states. [2020-10-13 08:19:14,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13993 states to 13993 states and 18650 transitions. [2020-10-13 08:19:14,763 INFO L78 Accepts]: Start accepts. Automaton has 13993 states and 18650 transitions. Word has length 283 [2020-10-13 08:19:14,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:19:14,764 INFO L479 AbstractCegarLoop]: Abstraction has 13993 states and 18650 transitions. [2020-10-13 08:19:14,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:19:14,764 INFO L276 IsEmpty]: Start isEmpty. Operand 13993 states and 18650 transitions. [2020-10-13 08:19:14,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-13 08:19:14,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:19:14,778 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:19:14,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:19:14,779 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:19:14,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:19:14,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1398501312, now seen corresponding path program 1 times [2020-10-13 08:19:14,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:19:14,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788785428] [2020-10-13 08:19:14,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:19:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:14,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:14,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:14,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:17,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:19,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:19,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-13 08:19:19,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:19:19,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 08:19:19,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:19,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:19,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-13 08:19:19,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 08:19:19,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:19,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:19:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:19,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:19,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:19,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:19:19,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:19,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:19:19,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:19,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:19,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:19,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:19,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:19,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:19:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:19,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:19,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:19,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 08:19:19,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:19,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 08:19:19,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:19,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:19,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 08:19:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:20,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:20,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:20,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 08:19:20,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:20,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-13 08:19:20,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:20,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:19:20,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:20,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-13 08:19:20,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:20,400 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-13 08:19:20,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788785428] [2020-10-13 08:19:20,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:19:20,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:19:20,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886522590] [2020-10-13 08:19:20,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:19:20,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:19:20,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:19:20,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:19:20,404 INFO L87 Difference]: Start difference. First operand 13993 states and 18650 transitions. Second operand 5 states. [2020-10-13 08:19:33,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:19:33,677 INFO L93 Difference]: Finished difference Result 37282 states and 51659 transitions. [2020-10-13 08:19:33,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:19:33,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 305 [2020-10-13 08:19:33,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:19:33,756 INFO L225 Difference]: With dead ends: 37282 [2020-10-13 08:19:33,757 INFO L226 Difference]: Without dead ends: 23295 [2020-10-13 08:19:33,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:19:33,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23295 states. [2020-10-13 08:19:34,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23295 to 23287. [2020-10-13 08:19:34,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23287 states. [2020-10-13 08:19:34,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23287 states to 23287 states and 29806 transitions. [2020-10-13 08:19:34,280 INFO L78 Accepts]: Start accepts. Automaton has 23287 states and 29806 transitions. Word has length 305 [2020-10-13 08:19:34,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:19:34,282 INFO L479 AbstractCegarLoop]: Abstraction has 23287 states and 29806 transitions. [2020-10-13 08:19:34,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:19:34,282 INFO L276 IsEmpty]: Start isEmpty. Operand 23287 states and 29806 transitions. [2020-10-13 08:19:34,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2020-10-13 08:19:34,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:19:34,342 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:19:34,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:19:34,343 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:19:34,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:19:34,343 INFO L82 PathProgramCache]: Analyzing trace with hash 254847291, now seen corresponding path program 1 times [2020-10-13 08:19:34,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:19:34,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84988145] [2020-10-13 08:19:34,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:19:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:34,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:34,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:34,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:39,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:39,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 586 [2020-10-13 08:19:39,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:19:39,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 08:19:39,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:39,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:39,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 08:19:39,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:19:39,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:19:39,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:19:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:39,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:39,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:39,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:19:39,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:39,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:19:39,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:39,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:39,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:39,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:39,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:39,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:19:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:39,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:39,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:39,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:19:39,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:39,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 08:19:39,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:39,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:39,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:39,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:39,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:39,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 08:19:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:39,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:39,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:39,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:19:39,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:39,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 08:19:39,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:39,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:19:39,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:39,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:19:39,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:39,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-13 08:19:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:40,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:40,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:41,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:41,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-13 08:19:41,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:19:41,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1589 [2020-10-13 08:19:41,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:19:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 353 [2020-10-13 08:19:41,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:42,250 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-10-13 08:19:42,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:19:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:42,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:42,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:42,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 08:19:42,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:42,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 08:19:42,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:42,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:19:42,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:42,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 08:19:42,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:44,020 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 306 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 08:19:44,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84988145] [2020-10-13 08:19:44,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:19:44,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:19:44,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049924611] [2020-10-13 08:19:44,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:19:44,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:19:44,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:19:44,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:19:44,023 INFO L87 Difference]: Start difference. First operand 23287 states and 29806 transitions. Second operand 7 states. [2020-10-13 08:19:52,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:19:52,923 INFO L93 Difference]: Finished difference Result 46705 states and 60433 transitions. [2020-10-13 08:19:52,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 08:19:52,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 570 [2020-10-13 08:19:52,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:19:53,012 INFO L225 Difference]: With dead ends: 46705 [2020-10-13 08:19:53,013 INFO L226 Difference]: Without dead ends: 23412 [2020-10-13 08:19:53,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:19:53,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23412 states. [2020-10-13 08:19:53,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23412 to 23341. [2020-10-13 08:19:53,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23341 states. [2020-10-13 08:19:53,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23341 states to 23341 states and 30078 transitions. [2020-10-13 08:19:53,791 INFO L78 Accepts]: Start accepts. Automaton has 23341 states and 30078 transitions. Word has length 570 [2020-10-13 08:19:53,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:19:53,792 INFO L479 AbstractCegarLoop]: Abstraction has 23341 states and 30078 transitions. [2020-10-13 08:19:53,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:19:53,792 INFO L276 IsEmpty]: Start isEmpty. Operand 23341 states and 30078 transitions. [2020-10-13 08:19:53,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2020-10-13 08:19:53,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:19:53,866 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:19:53,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:19:53,866 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:19:53,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:19:53,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1609445681, now seen corresponding path program 1 times [2020-10-13 08:19:53,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:19:53,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641826052] [2020-10-13 08:19:53,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:19:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:54,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:54,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:56,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:56,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:59,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:59,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 633 [2020-10-13 08:19:59,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:19:59,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-13 08:19:59,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:59,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:59,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 225 [2020-10-13 08:19:59,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 08:19:59,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:59,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:19:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:59,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:59,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:59,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:19:59,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:59,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:19:59,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:59,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:59,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:59,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:59,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:59,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:19:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:59,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:59,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:59,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 08:19:59,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:59,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-13 08:19:59,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:59,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:19:59,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:59,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-13 08:19:59,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:59,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-13 08:19:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:59,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:59,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:00,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:00,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-13 08:20:00,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:20:00,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1306 [2020-10-13 08:20:00,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:00,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:20:00,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:20:00,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 353 [2020-10-13 08:20:00,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:01,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:20:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:01,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:01,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:01,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 08:20:01,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:01,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-13 08:20:01,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:01,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:20:01,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:20:01,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:20:01,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:01,618 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 306 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:20:01,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641826052] [2020-10-13 08:20:01,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:20:01,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:20:01,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898926797] [2020-10-13 08:20:01,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:20:01,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:20:01,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:20:01,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:20:01,623 INFO L87 Difference]: Start difference. First operand 23341 states and 30078 transitions. Second operand 8 states. [2020-10-13 08:20:22,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:20:22,832 INFO L93 Difference]: Finished difference Result 56940 states and 81326 transitions. [2020-10-13 08:20:22,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 08:20:22,841 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 619 [2020-10-13 08:20:22,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:20:23,045 INFO L225 Difference]: With dead ends: 56940 [2020-10-13 08:20:23,045 INFO L226 Difference]: Without dead ends: 33585 [2020-10-13 08:20:23,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-13 08:20:23,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33585 states. [2020-10-13 08:20:23,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33585 to 31690. [2020-10-13 08:20:23,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31690 states. [2020-10-13 08:20:23,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31690 states to 31690 states and 42267 transitions. [2020-10-13 08:20:23,980 INFO L78 Accepts]: Start accepts. Automaton has 31690 states and 42267 transitions. Word has length 619 [2020-10-13 08:20:23,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:20:23,981 INFO L479 AbstractCegarLoop]: Abstraction has 31690 states and 42267 transitions. [2020-10-13 08:20:23,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:20:23,981 INFO L276 IsEmpty]: Start isEmpty. Operand 31690 states and 42267 transitions. [2020-10-13 08:20:24,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2020-10-13 08:20:24,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:20:24,041 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:20:24,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:20:24,042 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:20:24,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:20:24,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1002374040, now seen corresponding path program 1 times [2020-10-13 08:20:24,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:20:24,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667956015] [2020-10-13 08:20:24,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:20:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:24,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:24,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:24,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:27,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:28,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:29,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:29,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 641 [2020-10-13 08:20:29,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:20:29,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5288 [2020-10-13 08:20:29,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:29,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:20:29,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 584 [2020-10-13 08:20:29,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 08:20:29,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:29,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:20:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:29,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:29,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:29,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:20:29,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:29,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:20:29,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:29,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:20:29,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:20:29,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:20:29,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:20:29,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:29,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:29,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:29,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 08:20:29,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:29,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 08:20:29,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:29,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:20:29,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:29,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:20:29,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:20:29,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 08:20:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:29,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:29,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:29,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 08:20:29,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:29,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 08:20:29,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:29,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:20:29,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:29,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:20:29,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:20:29,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-13 08:20:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:30,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:30,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:30,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-13 08:20:30,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:30,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-13 08:20:30,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:20:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:30,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 344 [2020-10-13 08:20:30,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:20:30,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:20:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:30,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:30,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:30,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 08:20:30,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:30,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 08:20:30,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:30,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:20:30,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:30,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 08:20:30,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:30,871 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 144 proven. 3 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-13 08:20:30,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667956015] [2020-10-13 08:20:30,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:20:30,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:20:30,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374008254] [2020-10-13 08:20:30,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:20:30,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:20:30,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:20:30,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:20:30,874 INFO L87 Difference]: Start difference. First operand 31690 states and 42267 transitions. Second operand 5 states. [2020-10-13 08:20:45,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:20:45,504 INFO L93 Difference]: Finished difference Result 69612 states and 96472 transitions. [2020-10-13 08:20:45,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:20:45,506 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 625 [2020-10-13 08:20:45,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:20:45,614 INFO L225 Difference]: With dead ends: 69612 [2020-10-13 08:20:45,614 INFO L226 Difference]: Without dead ends: 37928 [2020-10-13 08:20:45,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:20:45,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37928 states. [2020-10-13 08:20:46,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37928 to 37145. [2020-10-13 08:20:46,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37145 states. [2020-10-13 08:20:46,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37145 states to 37145 states and 49060 transitions. [2020-10-13 08:20:46,451 INFO L78 Accepts]: Start accepts. Automaton has 37145 states and 49060 transitions. Word has length 625 [2020-10-13 08:20:46,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:20:46,452 INFO L479 AbstractCegarLoop]: Abstraction has 37145 states and 49060 transitions. [2020-10-13 08:20:46,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:20:46,453 INFO L276 IsEmpty]: Start isEmpty. Operand 37145 states and 49060 transitions. [2020-10-13 08:20:46,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2020-10-13 08:20:46,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:20:46,529 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:20:46,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:20:46,530 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:20:46,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:20:46,530 INFO L82 PathProgramCache]: Analyzing trace with hash -2045846510, now seen corresponding path program 1 times [2020-10-13 08:20:46,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:20:46,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057898160] [2020-10-13 08:20:46,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:20:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:46,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:46,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:51,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:51,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 855 [2020-10-13 08:20:51,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:20:51,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 08:20:51,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:51,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:20:51,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:20:51,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 08:20:51,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:51,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:20:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:51,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:51,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:51,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:20:51,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:51,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:20:51,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:51,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:20:51,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:51,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:20:51,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:51,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:20:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:51,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:51,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:51,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:20:51,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:51,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 08:20:51,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:51,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:20:51,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:20:51,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:20:51,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:51,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 08:20:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:52,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:52,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:52,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 696 [2020-10-13 08:20:52,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:52,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-13 08:20:52,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:20:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 693 [2020-10-13 08:20:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:20:52,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:52,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:20:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:52,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:52,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:52,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-13 08:20:52,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:52,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 08:20:52,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:52,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:20:52,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:52,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:20:52,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:52,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:20:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:52,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:52,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:52,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:20:52,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:52,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 08:20:52,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:52,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:20:52,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:52,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:20:52,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:54,178 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 94 proven. 89 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:20:54,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057898160] [2020-10-13 08:20:54,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:20:54,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:20:54,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519110018] [2020-10-13 08:20:54,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:20:54,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:20:54,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:20:54,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:20:54,180 INFO L87 Difference]: Start difference. First operand 37145 states and 49060 transitions. Second operand 7 states. [2020-10-13 08:21:09,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:21:09,664 INFO L93 Difference]: Finished difference Result 93535 states and 124292 transitions. [2020-10-13 08:21:09,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:21:09,666 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 839 [2020-10-13 08:21:09,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:21:09,812 INFO L225 Difference]: With dead ends: 93535 [2020-10-13 08:21:09,812 INFO L226 Difference]: Without dead ends: 56396 [2020-10-13 08:21:09,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:21:09,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56396 states. [2020-10-13 08:21:10,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56396 to 56334. [2020-10-13 08:21:10,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56334 states. [2020-10-13 08:21:11,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56334 states to 56334 states and 72727 transitions. [2020-10-13 08:21:11,138 INFO L78 Accepts]: Start accepts. Automaton has 56334 states and 72727 transitions. Word has length 839 [2020-10-13 08:21:11,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:21:11,139 INFO L479 AbstractCegarLoop]: Abstraction has 56334 states and 72727 transitions. [2020-10-13 08:21:11,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:21:11,140 INFO L276 IsEmpty]: Start isEmpty. Operand 56334 states and 72727 transitions. [2020-10-13 08:21:11,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 872 [2020-10-13 08:21:11,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:21:11,274 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:21:11,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:21:11,274 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:21:11,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:21:11,275 INFO L82 PathProgramCache]: Analyzing trace with hash 626276946, now seen corresponding path program 1 times [2020-10-13 08:21:11,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:21:11,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240875899] [2020-10-13 08:21:11,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:21:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:11,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:11,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:16,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:16,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 887 [2020-10-13 08:21:16,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:21:16,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-13 08:21:16,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:16,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:21:16,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:21:16,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-13 08:21:16,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:16,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:21:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:16,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:16,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:16,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:21:16,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:16,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:21:16,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:16,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:21:16,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:16,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:21:16,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:16,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:21:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:16,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:16,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:16,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:21:16,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:16,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 08:21:16,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:16,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:21:16,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:21:16,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-13 08:21:16,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:16,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:21:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:17,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:17,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:17,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 696 [2020-10-13 08:21:17,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:17,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-13 08:21:17,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:17,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:21:17,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 693 [2020-10-13 08:21:17,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:21:17,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:17,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:21:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:17,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:17,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:17,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-13 08:21:17,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:17,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 08:21:17,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:17,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:21:17,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:17,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:21:17,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:17,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:21:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:17,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:17,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:17,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:21:17,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:17,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 08:21:17,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:17,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:21:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:21:17,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0