/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem10_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:39:37,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:39:37,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:39:37,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:39:37,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:39:37,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:39:37,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:39:37,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:39:37,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:39:37,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:39:37,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:39:37,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:39:37,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:39:37,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:39:37,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:39:37,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:39:37,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:39:37,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:39:37,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:39:37,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:39:37,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:39:37,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:39:37,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:39:37,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:39:37,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:39:37,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:39:37,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:39:37,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:39:37,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:39:37,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:39:37,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:39:37,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:39:37,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:39:37,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:39:37,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:39:37,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:39:37,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:39:37,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:39:37,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:39:37,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:39:37,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:39:37,276 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 [2020-09-25 05:39:37,326 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:39:37,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:39:37,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:39:37,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:39:37,329 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:39:37,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:39:37,330 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:39:37,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:39:37,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:39:37,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:39:37,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:39:37,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:39:37,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:39:37,332 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:39:37,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:39:37,333 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:39:37,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:39:37,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:39:37,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:39:37,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:39:37,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:39:37,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:39:37,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:39:37,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:39:37,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:39:37,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:39:37,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:39:37,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:39:37,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:39:37,337 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:39:37,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:39:37,846 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:39:37,851 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:39:37,853 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:39:37,853 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:39:37,854 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label54.c [2020-09-25 05:39:37,930 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/074759818/1257fdf1e9294028957bffc8996277ee/FLAG029fb5987 [2020-09-25 05:39:38,614 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:39:38,615 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label54.c [2020-09-25 05:39:38,629 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/074759818/1257fdf1e9294028957bffc8996277ee/FLAG029fb5987 [2020-09-25 05:39:38,850 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/074759818/1257fdf1e9294028957bffc8996277ee [2020-09-25 05:39:38,865 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:39:38,871 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:39:38,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:38,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:39:38,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:39:38,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:38" (1/1) ... [2020-09-25 05:39:38,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bef9f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:38, skipping insertion in model container [2020-09-25 05:39:38,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:38" (1/1) ... [2020-09-25 05:39:38,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:39:38,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:39:39,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:39,455 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:39:39,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:39,704 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:39:39,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:39 WrapperNode [2020-09-25 05:39:39,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:39,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:39:39,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:39:39,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:39:39,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:39" (1/1) ... [2020-09-25 05:39:39,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:39" (1/1) ... [2020-09-25 05:39:39,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:39" (1/1) ... [2020-09-25 05:39:39,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:39" (1/1) ... [2020-09-25 05:39:39,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:39" (1/1) ... [2020-09-25 05:39:39,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:39" (1/1) ... [2020-09-25 05:39:39,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:39" (1/1) ... [2020-09-25 05:39:39,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:39:39,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:39:39,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:39:39,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:39:39,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:39" (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 [2020-09-25 05:39:39,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:39:39,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:39:39,899 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:39:39,900 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:39:39,900 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:39:39,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:39:39,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:39:39,900 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:39:39,901 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:39:39,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:39:39,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:39:41,412 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:39:41,413 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:39:41,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:41 BoogieIcfgContainer [2020-09-25 05:39:41,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:39:41,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:39:41,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:39:41,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:39:41,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:39:38" (1/3) ... [2020-09-25 05:39:41,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ac3cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:41, skipping insertion in model container [2020-09-25 05:39:41,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:39" (2/3) ... [2020-09-25 05:39:41,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ac3cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:41, skipping insertion in model container [2020-09-25 05:39:41,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:41" (3/3) ... [2020-09-25 05:39:41,433 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label54.c [2020-09-25 05:39:41,447 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:39:41,460 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:39:41,485 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:39:41,521 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:39:41,522 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:39:41,522 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:39:41,522 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:39:41,522 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:39:41,522 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:39:41,523 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:39:41,523 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:39:41,555 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 05:39:41,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 05:39:41,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:41,569 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] [2020-09-25 05:39:41,569 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:41,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:41,578 INFO L82 PathProgramCache]: Analyzing trace with hash -2126243537, now seen corresponding path program 1 times [2020-09-25 05:39:41,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:41,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930015990] [2020-09-25 05:39:41,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:41,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:42,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:42,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:43,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:43,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 05:39:43,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:39:43,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1328 [2020-09-25 05:39:43,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:43,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:43,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:39:43,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:39:43,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 05:39:43,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:39:43,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:43,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:43,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:43,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:43,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:43,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 05:39:43,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:43,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:43,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:43,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:43,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:39:43,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:43,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:43,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930015990] [2020-09-25 05:39:43,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:39:43,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:39:43,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958567939] [2020-09-25 05:39:43,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:39:43,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:43,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:39:43,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:39:43,396 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 05:39:45,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:45,484 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 05:39:45,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:39:45,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-09-25 05:39:45,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:45,510 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 05:39:45,510 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 05:39:45,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:45,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 05:39:45,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 05:39:45,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 05:39:45,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 05:39:45,619 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 81 [2020-09-25 05:39:45,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:45,620 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 05:39:45,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:39:45,621 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 05:39:45,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 05:39:45,630 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:45,630 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:39:45,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:39:45,631 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:45,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:45,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1687287808, now seen corresponding path program 1 times [2020-09-25 05:39:45,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:45,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534216591] [2020-09-25 05:39:45,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:45,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:45,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:46,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:46,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:46,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:46,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:46,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:50,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:50,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 05:39:50,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:39:50,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 05:39:50,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:50,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 05:39:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 05:39:50,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:50,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:50,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:50,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:50,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:50,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:50,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:39:50,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:50,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:50,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:50,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:50,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:50,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:50,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:50,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:51,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:51,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:39:51,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:51,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 05:39:51,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:51,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 05:39:51,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:51,115 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:51,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534216591] [2020-09-25 05:39:51,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:51,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:51,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567088455] [2020-09-25 05:39:51,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:51,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:51,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:51,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:51,120 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 05:39:52,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:52,942 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 05:39:52,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:52,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-25 05:39:52,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:52,956 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 05:39:52,957 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 05:39:52,960 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 [2020-09-25 05:39:52,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 05:39:53,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 05:39:53,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 05:39:53,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 05:39:53,012 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 160 [2020-09-25 05:39:53,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:53,013 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 05:39:53,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:53,013 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 05:39:53,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 05:39:53,017 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:53,017 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:39:53,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:39:53,018 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:53,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:53,018 INFO L82 PathProgramCache]: Analyzing trace with hash 935848482, now seen corresponding path program 1 times [2020-09-25 05:39:53,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:53,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501331932] [2020-09-25 05:39:53,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:53,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:53,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:53,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:53,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:56,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:56,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:58,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:58,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 05:39:58,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:39:58,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:39:58,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:58,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:58,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:58,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 05:39:58,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:39:58,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:58,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:58,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:58,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:58,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:58,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:58,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:39:58,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:58,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:58,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:58,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:58,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:58,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:58,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:58,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:58,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:58,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:39:58,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:58,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 05:39:58,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:58,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:58,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:58,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:58,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 05:39:58,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:58,344 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:58,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501331932] [2020-09-25 05:39:58,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:58,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:58,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362992466] [2020-09-25 05:39:58,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:58,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:58,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:58,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:58,349 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 5 states. [2020-09-25 05:40:00,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:00,529 INFO L93 Difference]: Finished difference Result 1549 states and 1979 transitions. [2020-09-25 05:40:00,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:00,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-09-25 05:40:00,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:00,537 INFO L225 Difference]: With dead ends: 1549 [2020-09-25 05:40:00,537 INFO L226 Difference]: Without dead ends: 1019 [2020-09-25 05:40:00,539 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 [2020-09-25 05:40:00,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2020-09-25 05:40:00,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 999. [2020-09-25 05:40:00,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-09-25 05:40:00,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1219 transitions. [2020-09-25 05:40:00,582 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1219 transitions. Word has length 170 [2020-09-25 05:40:00,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:00,584 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1219 transitions. [2020-09-25 05:40:00,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:00,584 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1219 transitions. [2020-09-25 05:40:00,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 05:40:00,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:00,592 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:40:00,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:40:00,592 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:00,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:00,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1528839770, now seen corresponding path program 1 times [2020-09-25 05:40:00,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:00,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878684520] [2020-09-25 05:40:00,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:00,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:00,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:00,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:01,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:01,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:03,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:03,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 05:40:03,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:40:03,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3093 [2020-09-25 05:40:03,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:03,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:03,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:40:03,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 05:40:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 05:40:03,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:03,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:03,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:03,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:03,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:03,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:03,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:40:03,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:03,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:03,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:03,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:03,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:03,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:03,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:03,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:03,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:03,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 05:40:03,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:03,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 05:40:03,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:03,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:03,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:40:03,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 05:40:03,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:04,059 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:04,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878684520] [2020-09-25 05:40:04,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:04,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:40:04,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221790613] [2020-09-25 05:40:04,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:40:04,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:04,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:40:04,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:40:04,062 INFO L87 Difference]: Start difference. First operand 999 states and 1219 transitions. Second operand 6 states. [2020-09-25 05:40:06,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:06,471 INFO L93 Difference]: Finished difference Result 2949 states and 3770 transitions. [2020-09-25 05:40:06,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:40:06,472 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2020-09-25 05:40:06,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:06,486 INFO L225 Difference]: With dead ends: 2949 [2020-09-25 05:40:06,486 INFO L226 Difference]: Without dead ends: 2115 [2020-09-25 05:40:06,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:40:06,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2020-09-25 05:40:06,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 2066. [2020-09-25 05:40:06,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2066 states. [2020-09-25 05:40:06,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2066 states to 2066 states and 2538 transitions. [2020-09-25 05:40:06,571 INFO L78 Accepts]: Start accepts. Automaton has 2066 states and 2538 transitions. Word has length 172 [2020-09-25 05:40:06,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:06,572 INFO L479 AbstractCegarLoop]: Abstraction has 2066 states and 2538 transitions. [2020-09-25 05:40:06,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:40:06,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2066 states and 2538 transitions. [2020-09-25 05:40:06,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 05:40:06,580 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:06,580 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:40:06,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:40:06,581 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:06,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:06,581 INFO L82 PathProgramCache]: Analyzing trace with hash 2121536478, now seen corresponding path program 1 times [2020-09-25 05:40:06,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:06,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656188258] [2020-09-25 05:40:06,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:06,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:06,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:06,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:09,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:10,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:10,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:11,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:11,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 05:40:11,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:40:11,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 05:40:11,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:11,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:11,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:11,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-09-25 05:40:11,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:40:11,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:11,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:11,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:11,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:11,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:11,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:11,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:40:11,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:11,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:11,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:11,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:11,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:11,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:11,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:11,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:11,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:11,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 05:40:11,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:11,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 05:40:11,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:11,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:11,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:11,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:11,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 05:40:11,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:40:11,913 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:11,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656188258] [2020-09-25 05:40:11,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:11,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:11,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318414938] [2020-09-25 05:40:11,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:11,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:11,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:11,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:11,916 INFO L87 Difference]: Start difference. First operand 2066 states and 2538 transitions. Second operand 5 states. [2020-09-25 05:40:13,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:13,939 INFO L93 Difference]: Finished difference Result 4443 states and 5617 transitions. [2020-09-25 05:40:13,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:13,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2020-09-25 05:40:13,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:13,955 INFO L225 Difference]: With dead ends: 4443 [2020-09-25 05:40:13,955 INFO L226 Difference]: Without dead ends: 2542 [2020-09-25 05:40:13,962 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 [2020-09-25 05:40:13,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2020-09-25 05:40:14,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 2372. [2020-09-25 05:40:14,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2372 states. [2020-09-25 05:40:14,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 2860 transitions. [2020-09-25 05:40:14,034 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 2860 transitions. Word has length 203 [2020-09-25 05:40:14,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:14,035 INFO L479 AbstractCegarLoop]: Abstraction has 2372 states and 2860 transitions. [2020-09-25 05:40:14,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:14,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 2860 transitions. [2020-09-25 05:40:14,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-09-25 05:40:14,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:14,045 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:40:14,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:40:14,046 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:14,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:14,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1227977262, now seen corresponding path program 1 times [2020-09-25 05:40:14,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:14,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369223058] [2020-09-25 05:40:14,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:14,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:14,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:14,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:14,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:15,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:17,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:19,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:19,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-09-25 05:40:19,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:40:19,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 05:40:19,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:19,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:19,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:19,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 05:40:19,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 05:40:19,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:40:19,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:19,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:19,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:19,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:19,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:19,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:40:19,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:19,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:19,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:19,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:19,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:19,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:19,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:19,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:19,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:19,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:40:19,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:19,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 05:40:19,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:19,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:19,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:19,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:19,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 05:40:19,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:19,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 05:40:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:19,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:19,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:19,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 05:40:19,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:19,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-25 05:40:19,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:19,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:19,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:19,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:40:19,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 05:40:19,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:19,906 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 212 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:40:19,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369223058] [2020-09-25 05:40:19,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:19,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:40:19,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840822996] [2020-09-25 05:40:19,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:40:19,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:19,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:40:19,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:40:19,911 INFO L87 Difference]: Start difference. First operand 2372 states and 2860 transitions. Second operand 8 states. [2020-09-25 05:40:22,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:22,798 INFO L93 Difference]: Finished difference Result 5263 states and 6428 transitions. [2020-09-25 05:40:22,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:40:22,799 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 305 [2020-09-25 05:40:22,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:22,811 INFO L225 Difference]: With dead ends: 5263 [2020-09-25 05:40:22,811 INFO L226 Difference]: Without dead ends: 2242 [2020-09-25 05:40:22,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-09-25 05:40:22,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2020-09-25 05:40:22,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 2180. [2020-09-25 05:40:22,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2180 states. [2020-09-25 05:40:22,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 2442 transitions. [2020-09-25 05:40:22,879 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 2442 transitions. Word has length 305 [2020-09-25 05:40:22,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:22,880 INFO L479 AbstractCegarLoop]: Abstraction has 2180 states and 2442 transitions. [2020-09-25 05:40:22,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:40:22,880 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 2442 transitions. [2020-09-25 05:40:22,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-09-25 05:40:22,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:22,888 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 05:40:22,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:40:22,889 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:22,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:22,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1593834304, now seen corresponding path program 1 times [2020-09-25 05:40:22,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:22,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235679398] [2020-09-25 05:40:22,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:22,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:23,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:23,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:23,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking...