/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 SingleStatement --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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:40:41,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:40:41,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:40:41,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:40:41,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:40:41,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:40:41,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:40:41,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:40:41,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:40:41,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:40:41,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:40:41,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:40:41,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:40:41,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:40:41,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:40:41,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:40:41,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:40:41,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:40:41,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:40:41,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:40:41,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:40:41,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:40:41,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:40:41,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:40:41,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:40:41,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:40:41,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:40:41,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:40:41,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:40:41,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:40:41,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:40:41,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:40:41,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:40:41,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:40:41,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:40:41,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:40:41,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:40:41,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:40:41,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:40:41,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:40:41,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:40:41,319 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 [2020-09-24 21:40:41,370 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:40:41,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:40:41,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:40:41,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:40:41,373 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:40:41,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:40:41,374 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:40:41,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:40:41,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:40:41,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:40:41,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:40:41,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:40:41,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:40:41,376 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:40:41,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:40:41,377 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:40:41,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:40:41,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:40:41,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:40:41,378 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:40:41,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:40:41,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:40:41,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:40:41,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:40:41,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:40:41,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:40:41,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:40:41,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:40:41,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:40:41,380 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 -> SingleStatement 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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:40:41,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:40:41,841 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:40:41,845 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:40:41,848 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:40:41,848 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:40:41,849 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2020-09-24 21:40:41,942 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/952252395/5450d7d9b6654dcd86570bcd1ea0e764/FLAG9f863d432 [2020-09-24 21:40:42,594 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:40:42,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2020-09-24 21:40:42,609 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/952252395/5450d7d9b6654dcd86570bcd1ea0e764/FLAG9f863d432 [2020-09-24 21:40:42,840 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/952252395/5450d7d9b6654dcd86570bcd1ea0e764 [2020-09-24 21:40:42,856 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:40:42,863 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:40:42,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:40:42,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:40:42,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:40:42,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:40:42" (1/1) ... [2020-09-24 21:40:42,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:42, skipping insertion in model container [2020-09-24 21:40:42,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:40:42" (1/1) ... [2020-09-24 21:40:42,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:40:42,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:40:43,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:40:43,451 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:40:43,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:40:43,702 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:40:43,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:43 WrapperNode [2020-09-24 21:40:43,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:40:43,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:40:43,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:40:43,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:40:43,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:43" (1/1) ... [2020-09-24 21:40:43,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:43" (1/1) ... [2020-09-24 21:40:43,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:43" (1/1) ... [2020-09-24 21:40:43,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:43" (1/1) ... [2020-09-24 21:40:43,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:43" (1/1) ... [2020-09-24 21:40:43,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:43" (1/1) ... [2020-09-24 21:40:43,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:43" (1/1) ... [2020-09-24 21:40:43,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:40:43,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:40:43,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:40:43,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:40:43,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:43" (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 [2020-09-24 21:40:43,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:40:43,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:40:43,916 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:40:43,916 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:40:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:40:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:40:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:40:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:40:43,917 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:40:43,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:40:43,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:40:45,303 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:40:45,304 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:40:45,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:40:45 BoogieIcfgContainer [2020-09-24 21:40:45,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:40:45,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:40:45,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:40:45,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:40:45,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:40:42" (1/3) ... [2020-09-24 21:40:45,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:40:45, skipping insertion in model container [2020-09-24 21:40:45,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:43" (2/3) ... [2020-09-24 21:40:45,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:40:45, skipping insertion in model container [2020-09-24 21:40:45,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:40:45" (3/3) ... [2020-09-24 21:40:45,324 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label58.c [2020-09-24 21:40:45,335 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:40:45,347 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:40:45,370 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:40:45,403 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:40:45,403 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:40:45,404 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:40:45,404 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:40:45,404 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:40:45,404 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:40:45,404 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:40:45,404 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:40:45,437 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 21:40:45,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-24 21:40:45,458 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:40:45,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:40:45,460 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:40:45,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:40:45,466 INFO L82 PathProgramCache]: Analyzing trace with hash 2032478133, now seen corresponding path program 1 times [2020-09-24 21:40:45,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:40:45,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859035075] [2020-09-24 21:40:45,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:40:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:45,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:46,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:46,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:46,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:47,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:48,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:48,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:48,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:50,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:50,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-24 21:40:50,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:40:50,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-24 21:40:50,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:50,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:40:50,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:40:50,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 21:40:50,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:40:51,627 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-09-24 21:40:51,786 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2020-09-24 21:40:51,944 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 38 [2020-09-24 21:40:52,086 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 35 [2020-09-24 21:40:52,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:40:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:52,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:52,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:52,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:40:52,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:52,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-24 21:40:52,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:52,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:40:52,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:40:52,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:40:52,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:52,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:40:52,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859035075] [2020-09-24 21:40:52,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:40:52,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-09-24 21:40:52,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401315792] [2020-09-24 21:40:52,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 21:40:52,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:40:52,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 21:40:52,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:40:52,754 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 18 states. [2020-09-24 21:40:53,114 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-09-24 21:40:53,255 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-09-24 21:40:53,440 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-24 21:40:53,786 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 99 [2020-09-24 21:40:54,119 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2020-09-24 21:40:54,608 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 93 [2020-09-24 21:40:55,674 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 90 [2020-09-24 21:40:56,225 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 85 [2020-09-24 21:41:00,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:41:00,247 INFO L93 Difference]: Finished difference Result 1700 states and 2421 transitions. [2020-09-24 21:41:00,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 21:41:00,249 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 127 [2020-09-24 21:41:00,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:41:00,283 INFO L225 Difference]: With dead ends: 1700 [2020-09-24 21:41:00,284 INFO L226 Difference]: Without dead ends: 1101 [2020-09-24 21:41:00,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=303, Invalid=627, Unknown=0, NotChecked=0, Total=930 [2020-09-24 21:41:00,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-09-24 21:41:00,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 985. [2020-09-24 21:41:00,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-09-24 21:41:00,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1147 transitions. [2020-09-24 21:41:00,435 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1147 transitions. Word has length 127 [2020-09-24 21:41:00,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:41:00,436 INFO L479 AbstractCegarLoop]: Abstraction has 985 states and 1147 transitions. [2020-09-24 21:41:00,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 21:41:00,436 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1147 transitions. [2020-09-24 21:41:00,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-24 21:41:00,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:41:00,471 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:41:00,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:41:00,472 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:41:00,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:41:00,472 INFO L82 PathProgramCache]: Analyzing trace with hash -2031815638, now seen corresponding path program 1 times [2020-09-24 21:41:00,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:41:00,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001493578] [2020-09-24 21:41:00,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:41:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:00,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:00,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:01,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:03,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:03,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:04,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:05,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:05,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-24 21:41:05,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:41:05,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-24 21:41:05,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:05,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 21:41:05,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 21:41:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-24 21:41:05,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:41:06,383 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2020-09-24 21:41:06,583 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 50 [2020-09-24 21:41:06,799 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 47 [2020-09-24 21:41:07,011 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 43 [2020-09-24 21:41:07,210 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 39 [2020-09-24 21:41:07,391 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 33 [2020-09-24 21:41:07,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:41:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:07,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:07,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:07,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:41:07,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:41:07,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 21:41:07,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:07,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:41:07,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:41:07,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:41:07,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:41:07,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:41:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:07,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:07,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:07,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:41:07,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:41:07,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 21:41:07,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:07,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:41:07,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:41:07,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:41:07,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:41:08,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 21:41:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:08,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:08,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:08,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:08,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:41:08,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:41:08,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-24 21:41:08,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:08,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:41:08,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:41:08,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:41:08,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:41:08,457 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 25 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:41:08,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001493578] [2020-09-24 21:41:08,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:41:08,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 21:41:08,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127793663] [2020-09-24 21:41:08,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 21:41:08,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:41:08,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 21:41:08,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2020-09-24 21:41:08,462 INFO L87 Difference]: Start difference. First operand 985 states and 1147 transitions. Second operand 23 states. [2020-09-24 21:41:09,044 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2020-09-24 21:41:10,421 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2020-09-24 21:41:12,973 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 95 [2020-09-24 21:41:13,397 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 93 [2020-09-24 21:41:14,354 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 92 [2020-09-24 21:41:14,844 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 90 [2020-09-24 21:41:15,172 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 88 [2020-09-24 21:41:15,664 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 86 [2020-09-24 21:41:15,909 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2020-09-24 21:41:16,307 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 102 [2020-09-24 21:41:17,313 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 99 [2020-09-24 21:41:18,459 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2020-09-24 21:41:18,861 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 96 [2020-09-24 21:41:19,145 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 82 [2020-09-24 21:41:20,030 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 93 [2020-09-24 21:41:20,255 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2020-09-24 21:41:20,598 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2020-09-24 21:41:20,941 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 90 [2020-09-24 21:41:22,040 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 85 [2020-09-24 21:41:23,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:41:23,088 INFO L93 Difference]: Finished difference Result 3610 states and 4573 transitions. [2020-09-24 21:41:23,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-09-24 21:41:23,089 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 165 [2020-09-24 21:41:23,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:41:23,104 INFO L225 Difference]: With dead ends: 3610 [2020-09-24 21:41:23,105 INFO L226 Difference]: Without dead ends: 2713 [2020-09-24 21:41:23,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=912, Invalid=2510, Unknown=0, NotChecked=0, Total=3422 [2020-09-24 21:41:23,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2020-09-24 21:41:23,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2155. [2020-09-24 21:41:23,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2155 states. [2020-09-24 21:41:23,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 2571 transitions. [2020-09-24 21:41:23,190 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 2571 transitions. Word has length 165 [2020-09-24 21:41:23,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:41:23,190 INFO L479 AbstractCegarLoop]: Abstraction has 2155 states and 2571 transitions. [2020-09-24 21:41:23,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 21:41:23,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 2571 transitions. [2020-09-24 21:41:23,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-24 21:41:23,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:41:23,199 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:41:23,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:41:23,200 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:41:23,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:41:23,201 INFO L82 PathProgramCache]: Analyzing trace with hash 348968668, now seen corresponding path program 1 times [2020-09-24 21:41:23,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:41:23,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854886619] [2020-09-24 21:41:23,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:41:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:23,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:23,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:23,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:26,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:26,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:27,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:27,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:28,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:28,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-24 21:41:28,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:41:28,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 21:41:28,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:28,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:41:28,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:41:28,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:41:28,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:41:28,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:41:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:28,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:28,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:28,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:41:28,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:41:28,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 21:41:28,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:28,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:41:28,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:41:28,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:41:28,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:41:28,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:41:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:28,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:28,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:28,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:28,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:41:28,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:41:28,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 21:41:28,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:28,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:41:28,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:41:28,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:41:28,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:41:28,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 21:41:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:28,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:28,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:28,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:41:28,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:41:28,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 21:41:28,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:28,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:41:28,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:41:28,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:41:28,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:41:28,608 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 21:41:28,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854886619] [2020-09-24 21:41:28,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:41:28,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:41:28,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311079937] [2020-09-24 21:41:28,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:41:28,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:41:28,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:41:28,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:41:28,612 INFO L87 Difference]: Start difference. First operand 2155 states and 2571 transitions. Second operand 8 states. [2020-09-24 21:41:31,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:41:31,117 INFO L93 Difference]: Finished difference Result 5441 states and 6838 transitions. [2020-09-24 21:41:31,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:41:31,118 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 169 [2020-09-24 21:41:31,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:41:31,138 INFO L225 Difference]: With dead ends: 5441 [2020-09-24 21:41:31,138 INFO L226 Difference]: Without dead ends: 3374 [2020-09-24 21:41:31,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:41:31,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3374 states. [2020-09-24 21:41:31,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3374 to 3127. [2020-09-24 21:41:31,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3127 states. [2020-09-24 21:41:31,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3127 states to 3127 states and 3788 transitions. [2020-09-24 21:41:31,256 INFO L78 Accepts]: Start accepts. Automaton has 3127 states and 3788 transitions. Word has length 169 [2020-09-24 21:41:31,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:41:31,257 INFO L479 AbstractCegarLoop]: Abstraction has 3127 states and 3788 transitions. [2020-09-24 21:41:31,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:41:31,257 INFO L276 IsEmpty]: Start isEmpty. Operand 3127 states and 3788 transitions. [2020-09-24 21:41:31,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-24 21:41:31,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:41:31,268 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:41:31,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:41:31,269 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:41:31,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:41:31,269 INFO L82 PathProgramCache]: Analyzing trace with hash -531650440, now seen corresponding path program 1 times [2020-09-24 21:41:31,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:41:31,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527761117] [2020-09-24 21:41:31,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:41:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:31,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:31,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:31,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:32,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking...