/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=1.0 --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_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:04:39,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:04:39,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:04:39,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:04:39,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:04:39,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:04:39,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:04:39,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:04:39,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:04:39,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:04:39,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:04:39,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:04:39,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:04:39,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:04:39,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:04:39,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:04:39,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:04:39,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:04:39,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:04:39,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:04:39,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:04:39,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:04:39,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:04:39,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:04:39,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:04:39,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:04:39,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:04:39,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:04:39,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:04:39,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:04:39,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:04:39,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:04:39,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:04:39,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:04:39,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:04:39,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:04:39,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:04:39,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:04:39,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:04:39,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:04:39,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:04:39,893 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 09:04:39,926 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:04:39,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:04:39,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:04:39,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:04:39,928 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:04:39,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:04:39,928 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:04:39,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:04:39,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:04:39,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:04:39,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:04:39,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:04:39,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:04:39,930 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:04:39,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:04:39,930 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:04:39,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:04:39,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:04:39,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:04:39,931 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:04:39,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:04:39,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:04:39,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:04:39,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:04:39,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:04:39,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:04:39,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:04:39,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:04:39,933 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:04:39,933 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:04:40,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:04:40,415 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:04:40,420 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:04:40,422 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:04:40,423 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:04:40,425 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label05.c [2020-09-25 09:04:40,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41e25e4a6/e6d239d1e94841a69841b8dd4c5016b8/FLAGaccf8658c [2020-09-25 09:04:41,142 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:04:41,143 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label05.c [2020-09-25 09:04:41,157 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41e25e4a6/e6d239d1e94841a69841b8dd4c5016b8/FLAGaccf8658c [2020-09-25 09:04:41,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41e25e4a6/e6d239d1e94841a69841b8dd4c5016b8 [2020-09-25 09:04:41,391 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:04:41,396 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:04:41,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:04:41,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:04:41,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:04:41,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:04:41" (1/1) ... [2020-09-25 09:04:41,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:41, skipping insertion in model container [2020-09-25 09:04:41,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:04:41" (1/1) ... [2020-09-25 09:04:41,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:04:41,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:04:42,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:04:42,093 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:04:42,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:04:42,221 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:04:42,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:42 WrapperNode [2020-09-25 09:04:42,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:04:42,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:04:42,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:04:42,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:04:42,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:42" (1/1) ... [2020-09-25 09:04:42,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:42" (1/1) ... [2020-09-25 09:04:42,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:42" (1/1) ... [2020-09-25 09:04:42,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:42" (1/1) ... [2020-09-25 09:04:42,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:42" (1/1) ... [2020-09-25 09:04:42,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:42" (1/1) ... [2020-09-25 09:04:42,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:42" (1/1) ... [2020-09-25 09:04:42,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:04:42,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:04:42,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:04:42,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:04:42,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:42" (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 09:04:42,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:04:42,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:04:42,459 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:04:42,460 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:04:42,461 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:04:42,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:04:42,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:04:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:04:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:04:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:04:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:04:43,893 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:04:43,893 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:04:43,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:04:43 BoogieIcfgContainer [2020-09-25 09:04:43,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:04:43,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:04:43,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:04:43,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:04:43,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:04:41" (1/3) ... [2020-09-25 09:04:43,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@374bbd20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:04:43, skipping insertion in model container [2020-09-25 09:04:43,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:42" (2/3) ... [2020-09-25 09:04:43,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@374bbd20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:04:43, skipping insertion in model container [2020-09-25 09:04:43,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:04:43" (3/3) ... [2020-09-25 09:04:43,912 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label05.c [2020-09-25 09:04:43,924 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:04:43,936 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:04:43,958 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:04:43,997 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:04:43,997 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:04:43,997 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:04:43,998 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:04:43,998 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:04:43,998 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:04:43,998 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:04:43,998 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:04:44,030 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:04:44,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 09:04:44,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:44,044 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] [2020-09-25 09:04:44,045 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:44,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:44,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1858369017, now seen corresponding path program 1 times [2020-09-25 09:04:44,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:44,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914305392] [2020-09-25 09:04:44,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:44,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:44,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:44,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:45,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:45,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 09:04:45,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:04:45,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 753 [2020-09-25 09:04:45,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:45,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:45,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:04:45,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:04:45,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 09:04:45,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:04:45,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:45,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:45,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:45,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:04:45,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:45,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 09:04:45,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:45,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:45,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:45,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:45,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:04:45,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:04:45,356 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 09:04:45,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914305392] [2020-09-25 09:04:45,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:04:45,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:04:45,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975426585] [2020-09-25 09:04:45,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:04:45,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:45,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:04:45,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:04:45,390 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 09:04:48,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:48,591 INFO L93 Difference]: Finished difference Result 1352 states and 1911 transitions. [2020-09-25 09:04:48,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:04:48,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-09-25 09:04:48,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:48,622 INFO L225 Difference]: With dead ends: 1352 [2020-09-25 09:04:48,622 INFO L226 Difference]: Without dead ends: 806 [2020-09-25 09:04:48,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:04:48,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-09-25 09:04:48,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 727. [2020-09-25 09:04:48,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-09-25 09:04:48,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 896 transitions. [2020-09-25 09:04:48,764 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 896 transitions. Word has length 71 [2020-09-25 09:04:48,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:48,765 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 896 transitions. [2020-09-25 09:04:48,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:04:48,765 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 896 transitions. [2020-09-25 09:04:48,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 09:04:48,788 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:48,788 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:48,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:04:48,789 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:48,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:48,789 INFO L82 PathProgramCache]: Analyzing trace with hash 2032396842, now seen corresponding path program 1 times [2020-09-25 09:04:48,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:48,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642013806] [2020-09-25 09:04:48,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:48,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:49,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:49,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:49,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:49,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:49,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:50,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:51,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:53,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:53,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 09:04:53,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:04:53,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 09:04:53,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:53,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:53,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:04:53,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:04:53,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-25 09:04:53,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:04:54,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:54,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:54,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:54,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:04:54,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:54,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 09:04:54,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:54,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:54,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:54,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:04:54,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:54,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:04:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:54,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:54,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:54,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:54,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:04:54,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:04:54,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 09:04:54,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:54,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:54,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:54,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:54,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 09:04:54,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:54,351 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:04:54,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642013806] [2020-09-25 09:04:54,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:54,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:04:54,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847168432] [2020-09-25 09:04:54,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:04:54,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:54,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:04:54,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:04:54,356 INFO L87 Difference]: Start difference. First operand 727 states and 896 transitions. Second operand 6 states. [2020-09-25 09:04:56,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:56,137 INFO L93 Difference]: Finished difference Result 1057 states and 1392 transitions. [2020-09-25 09:04:56,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:04:56,138 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2020-09-25 09:04:56,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:56,150 INFO L225 Difference]: With dead ends: 1057 [2020-09-25 09:04:56,150 INFO L226 Difference]: Without dead ends: 1055 [2020-09-25 09:04:56,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:04:56,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2020-09-25 09:04:56,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 879. [2020-09-25 09:04:56,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 879 states. [2020-09-25 09:04:56,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1129 transitions. [2020-09-25 09:04:56,222 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1129 transitions. Word has length 154 [2020-09-25 09:04:56,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:56,225 INFO L479 AbstractCegarLoop]: Abstraction has 879 states and 1129 transitions. [2020-09-25 09:04:56,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:04:56,225 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1129 transitions. [2020-09-25 09:04:56,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 09:04:56,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:56,236 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:56,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:04:56,237 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:56,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:56,237 INFO L82 PathProgramCache]: Analyzing trace with hash 659489306, now seen corresponding path program 1 times [2020-09-25 09:04:56,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:56,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92558862] [2020-09-25 09:04:56,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:56,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:56,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:56,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:56,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:57,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:57,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:58,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:01,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:01,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 09:05:01,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:05:01,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:05:01,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:01,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:01,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:01,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 09:05:01,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 09:05:01,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:01,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:01,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:01,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:01,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:01,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:01,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:05:01,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:01,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:01,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:01,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:01,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:01,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:01,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:01,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:01,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:01,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:05:01,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:01,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 09:05:01,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:01,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:01,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:05:01,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:01,601 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:01,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92558862] [2020-09-25 09:05:01,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:01,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:05:01,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867265884] [2020-09-25 09:05:01,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:05:01,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:01,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:05:01,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:05:01,606 INFO L87 Difference]: Start difference. First operand 879 states and 1129 transitions. Second operand 6 states. [2020-09-25 09:05:04,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:04,442 INFO L93 Difference]: Finished difference Result 2425 states and 3308 transitions. [2020-09-25 09:05:04,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:05:04,443 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-09-25 09:05:04,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:04,454 INFO L225 Difference]: With dead ends: 2425 [2020-09-25 09:05:04,455 INFO L226 Difference]: Without dead ends: 1712 [2020-09-25 09:05:04,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:05:04,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2020-09-25 09:05:04,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1503. [2020-09-25 09:05:04,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1503 states. [2020-09-25 09:05:04,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 2034 transitions. [2020-09-25 09:05:04,537 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 2034 transitions. Word has length 160 [2020-09-25 09:05:04,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:04,539 INFO L479 AbstractCegarLoop]: Abstraction has 1503 states and 2034 transitions. [2020-09-25 09:05:04,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:05:04,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 2034 transitions. [2020-09-25 09:05:04,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 09:05:04,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:04,544 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:04,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:05:04,544 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:04,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:04,545 INFO L82 PathProgramCache]: Analyzing trace with hash -677190618, now seen corresponding path program 1 times [2020-09-25 09:05:04,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:04,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787494210] [2020-09-25 09:05:04,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:04,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:04,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:04,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:06,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:09,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:09,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 09:05:09,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:05:09,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:05:09,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:09,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:09,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 09:05:09,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:05:09,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 09:05:09,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:09,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:09,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:09,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:09,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:09,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:09,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 09:05:09,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:09,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:09,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:09,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:09,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:05:09,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:09,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:09,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:10,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:10,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:10,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 09:05:10,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:10,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 533 [2020-09-25 09:05:10,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:10,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:10,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:10,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:10,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 09:05:10,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:10,509 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:10,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787494210] [2020-09-25 09:05:10,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:10,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 09:05:10,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914360847] [2020-09-25 09:05:10,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 09:05:10,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:10,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 09:05:10,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:05:10,516 INFO L87 Difference]: Start difference. First operand 1503 states and 2034 transitions. Second operand 11 states. [2020-09-25 09:05:14,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:14,698 INFO L93 Difference]: Finished difference Result 3874 states and 5397 transitions. [2020-09-25 09:05:14,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:05:14,698 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 179 [2020-09-25 09:05:14,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:14,714 INFO L225 Difference]: With dead ends: 3874 [2020-09-25 09:05:14,715 INFO L226 Difference]: Without dead ends: 2490 [2020-09-25 09:05:14,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-09-25 09:05:14,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2020-09-25 09:05:14,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 2302. [2020-09-25 09:05:14,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2302 states. [2020-09-25 09:05:14,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 3115 transitions. [2020-09-25 09:05:14,809 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 3115 transitions. Word has length 179 [2020-09-25 09:05:14,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:14,809 INFO L479 AbstractCegarLoop]: Abstraction has 2302 states and 3115 transitions. [2020-09-25 09:05:14,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 09:05:14,810 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 3115 transitions. [2020-09-25 09:05:14,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 09:05:14,814 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:14,815 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:14,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:05:14,815 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:14,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:14,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1262455830, now seen corresponding path program 1 times [2020-09-25 09:05:14,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:14,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662885202] [2020-09-25 09:05:14,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:14,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:14,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:15,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:17,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:17,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:17,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:18,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:18,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:19,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:19,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 09:05:19,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:05:19,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 09:05:19,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:19,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:19,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:19,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:05:19,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 09:05:19,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:20,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:20,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:20,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:20,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:20,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:20,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 09:05:20,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:20,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:20,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:20,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:20,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:05:20,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:20,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:20,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:20,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:20,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:20,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 09:05:20,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:20,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-09-25 09:05:20,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:20,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:20,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:20,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:20,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 09:05:20,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:20,690 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:20,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662885202] [2020-09-25 09:05:20,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:20,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:05:20,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678659132] [2020-09-25 09:05:20,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:05:20,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:20,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:05:20,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:05:20,694 INFO L87 Difference]: Start difference. First operand 2302 states and 3115 transitions. Second operand 10 states. [2020-09-25 09:05:24,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:24,418 INFO L93 Difference]: Finished difference Result 5243 states and 7131 transitions. [2020-09-25 09:05:24,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 09:05:24,419 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 193 [2020-09-25 09:05:24,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:24,434 INFO L225 Difference]: With dead ends: 5243 [2020-09-25 09:05:24,434 INFO L226 Difference]: Without dead ends: 3078 [2020-09-25 09:05:24,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:05:24,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2020-09-25 09:05:24,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 2907. [2020-09-25 09:05:24,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2907 states. [2020-09-25 09:05:24,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 3819 transitions. [2020-09-25 09:05:24,535 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 3819 transitions. Word has length 193 [2020-09-25 09:05:24,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:24,536 INFO L479 AbstractCegarLoop]: Abstraction has 2907 states and 3819 transitions. [2020-09-25 09:05:24,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:05:24,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 3819 transitions. [2020-09-25 09:05:24,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-09-25 09:05:24,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:24,543 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, 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] [2020-09-25 09:05:24,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:05:24,544 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:24,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:24,544 INFO L82 PathProgramCache]: Analyzing trace with hash 144412734, now seen corresponding path program 1 times [2020-09-25 09:05:24,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:24,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189078163] [2020-09-25 09:05:24,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:24,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:24,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:24,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:25,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:25,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:26,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:26,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:28,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:28,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking...