/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_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:05:16,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:05:16,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:05:16,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:05:16,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:05:16,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:05:16,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:05:16,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:05:16,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:05:16,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:05:16,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:05:16,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:05:16,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:05:16,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:05:16,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:05:16,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:05:16,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:05:16,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:05:16,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:05:16,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:05:16,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:05:16,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:05:16,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:05:16,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:05:16,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:05:16,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:05:16,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:05:16,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:05:16,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:05:16,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:05:16,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:05:16,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:05:16,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:05:16,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:05:16,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:05:16,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:05:16,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:05:16,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:05:16,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:05:16,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:05:16,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:05:16,983 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 09:05:17,010 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:05:17,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:05:17,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:05:17,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:05:17,012 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:05:17,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:05:17,013 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:05:17,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:05:17,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:05:17,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:05:17,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:05:17,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:05:17,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:05:17,014 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:05:17,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:05:17,014 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:05:17,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:05:17,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:05:17,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:05:17,015 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:05:17,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:05:17,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:05:17,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:05:17,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:05:17,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:05:17,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:05:17,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:05:17,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:05:17,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:05:17,017 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 09:05:17,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:05:17,516 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:05:17,520 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:05:17,522 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:05:17,522 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:05:17,523 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2020-09-25 09:05:17,600 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9678f6f0f/4d97cd4daeec44eaad1f69318ea8f22d/FLAGa89f06c67 [2020-09-25 09:05:18,292 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:05:18,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2020-09-25 09:05:18,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9678f6f0f/4d97cd4daeec44eaad1f69318ea8f22d/FLAGa89f06c67 [2020-09-25 09:05:18,459 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9678f6f0f/4d97cd4daeec44eaad1f69318ea8f22d [2020-09-25 09:05:18,474 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:05:18,482 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:05:18,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:18,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:05:18,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:05:18,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:18" (1/1) ... [2020-09-25 09:05:18,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:18, skipping insertion in model container [2020-09-25 09:05:18,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:18" (1/1) ... [2020-09-25 09:05:18,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:05:18,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:05:19,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:19,093 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:05:19,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:19,343 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:05:19,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:19 WrapperNode [2020-09-25 09:05:19,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:19,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:05:19,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:05:19,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:05:19,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:19" (1/1) ... [2020-09-25 09:05:19,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:19" (1/1) ... [2020-09-25 09:05:19,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:19" (1/1) ... [2020-09-25 09:05:19,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:19" (1/1) ... [2020-09-25 09:05:19,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:19" (1/1) ... [2020-09-25 09:05:19,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:19" (1/1) ... [2020-09-25 09:05:19,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:19" (1/1) ... [2020-09-25 09:05:19,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:05:19,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:05:19,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:05:19,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:05:19,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:19" (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 09:05:19,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:05:19,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:05:19,575 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:05:19,575 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:05:19,576 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:05:19,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:05:19,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:05:19,576 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:05:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:05:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:05:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:05:21,184 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:05:21,184 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:05:21,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:21 BoogieIcfgContainer [2020-09-25 09:05:21,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:05:21,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:05:21,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:05:21,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:05:21,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:05:18" (1/3) ... [2020-09-25 09:05:21,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:21, skipping insertion in model container [2020-09-25 09:05:21,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:19" (2/3) ... [2020-09-25 09:05:21,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:21, skipping insertion in model container [2020-09-25 09:05:21,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:21" (3/3) ... [2020-09-25 09:05:21,214 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label17.c [2020-09-25 09:05:21,226 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:05:21,242 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:05:21,264 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:05:21,299 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:05:21,300 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:05:21,300 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:05:21,300 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:05:21,300 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:05:21,300 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:05:21,300 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:05:21,301 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:05:21,332 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:05:21,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 09:05:21,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:21,344 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] [2020-09-25 09:05:21,344 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:21,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:21,352 INFO L82 PathProgramCache]: Analyzing trace with hash -796596049, now seen corresponding path program 1 times [2020-09-25 09:05:21,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:21,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939204010] [2020-09-25 09:05:21,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:21,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:21,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:22,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:22,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:22,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 09:05:22,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:05:22,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 751 [2020-09-25 09:05:22,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:22,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:22,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:22,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:05:22,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 09:05:22,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:05:22,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:22,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:22,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:22,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:22,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:22,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 09:05:22,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:22,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:22,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:22,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:22,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:05:22,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:22,556 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 09:05:22,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939204010] [2020-09-25 09:05:22,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:05:22,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:05:22,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266005399] [2020-09-25 09:05:22,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:05:22,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:22,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:05:22,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:05:22,614 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 09:05:24,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:24,783 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 09:05:24,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:05:24,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-09-25 09:05:24,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:24,811 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 09:05:24,812 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 09:05:24,822 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 09:05:24,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 09:05:24,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 09:05:24,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 09:05:24,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 09:05:24,924 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 49 [2020-09-25 09:05:24,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:24,925 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 09:05:24,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:05:24,925 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 09:05:24,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 09:05:24,932 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:24,932 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:24,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:05:24,933 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:24,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:24,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1427265920, now seen corresponding path program 1 times [2020-09-25 09:05:24,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:24,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336307825] [2020-09-25 09:05:24,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:25,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:25,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:25,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:25,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:25,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:25,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:26,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:29,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:29,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 09:05:29,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:05:29,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 09:05:29,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:29,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:29,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:29,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:05:29,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 09:05:29,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:05:30,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:30,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:30,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:30,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:30,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:30,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:05:30,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:30,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:30,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:30,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:30,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:05:30,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:30,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:30,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:30,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:30,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:30,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:05:30,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:30,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 09:05:30,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:30,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:30,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:30,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:30,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 09:05:30,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:30,552 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:05:30,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336307825] [2020-09-25 09:05:30,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:30,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:05:30,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745332904] [2020-09-25 09:05:30,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:05:30,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:30,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:05:30,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:05:30,556 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 6 states. [2020-09-25 09:05:32,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:32,500 INFO L93 Difference]: Finished difference Result 1226 states and 1532 transitions. [2020-09-25 09:05:32,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:05:32,501 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2020-09-25 09:05:32,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:32,508 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 09:05:32,508 INFO L226 Difference]: Without dead ends: 697 [2020-09-25 09:05:32,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:05:32,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-09-25 09:05:32,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 695. [2020-09-25 09:05:32,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 09:05:32,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 09:05:32,548 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 128 [2020-09-25 09:05:32,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:32,549 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 09:05:32,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:05:32,549 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 09:05:32,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 09:05:32,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:32,554 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:32,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:05:32,554 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:32,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:32,555 INFO L82 PathProgramCache]: Analyzing trace with hash -863517790, now seen corresponding path program 1 times [2020-09-25 09:05:32,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:32,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360168897] [2020-09-25 09:05:32,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:32,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:32,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:32,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:32,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:33,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:36,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:36,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:36,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:37,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:37,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 09:05:37,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:05:37,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 09:05:37,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:37,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:37,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:37,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 09:05:37,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 09:05:37,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:37,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:37,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:37,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:37,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:37,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:37,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:05:37,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:37,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:37,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:37,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:37,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:37,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:37,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:37,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:37,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:37,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:05:37,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:37,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 09:05:37,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:37,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:37,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:37,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:37,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:05:37,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:37,993 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:37,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360168897] [2020-09-25 09:05:37,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:37,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:05:37,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918771623] [2020-09-25 09:05:37,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:05:37,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:37,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:05:37,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:05:37,998 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 6 states. [2020-09-25 09:05:41,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:41,028 INFO L93 Difference]: Finished difference Result 1909 states and 2489 transitions. [2020-09-25 09:05:41,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:05:41,029 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-09-25 09:05:41,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:41,038 INFO L225 Difference]: With dead ends: 1909 [2020-09-25 09:05:41,038 INFO L226 Difference]: Without dead ends: 1379 [2020-09-25 09:05:41,040 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 09:05:41,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2020-09-25 09:05:41,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1323. [2020-09-25 09:05:41,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1323 states. [2020-09-25 09:05:41,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 1704 transitions. [2020-09-25 09:05:41,092 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 1704 transitions. Word has length 138 [2020-09-25 09:05:41,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:41,092 INFO L479 AbstractCegarLoop]: Abstraction has 1323 states and 1704 transitions. [2020-09-25 09:05:41,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:05:41,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 1704 transitions. [2020-09-25 09:05:41,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 09:05:41,097 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:41,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:41,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:05:41,098 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:41,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:41,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1456961498, now seen corresponding path program 1 times [2020-09-25 09:05:41,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:41,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578512858] [2020-09-25 09:05:41,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:41,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:41,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:41,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:41,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:42,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:43,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:43,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 09:05:43,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:05:43,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2508 [2020-09-25 09:05:43,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:43,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:43,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:43,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:05:43,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 09:05:43,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:05:43,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:43,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:43,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:43,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:43,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:43,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 09:05:43,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:43,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:43,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:43,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:43,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:05:43,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:43,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:43,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:43,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:43,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 09:05:43,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:43,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 09:05:43,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:43,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:43,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:43,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:43,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 09:05:43,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:44,053 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:44,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578512858] [2020-09-25 09:05:44,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:05:44,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:05:44,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152591535] [2020-09-25 09:05:44,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:05:44,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:44,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:05:44,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:05:44,059 INFO L87 Difference]: Start difference. First operand 1323 states and 1704 transitions. Second operand 7 states. [2020-09-25 09:05:46,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:46,398 INFO L93 Difference]: Finished difference Result 3333 states and 4526 transitions. [2020-09-25 09:05:46,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:05:46,399 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-09-25 09:05:46,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:46,417 INFO L225 Difference]: With dead ends: 3333 [2020-09-25 09:05:46,417 INFO L226 Difference]: Without dead ends: 2175 [2020-09-25 09:05:46,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:05:46,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2175 states. [2020-09-25 09:05:46,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2175 to 1815. [2020-09-25 09:05:46,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1815 states. [2020-09-25 09:05:46,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2270 transitions. [2020-09-25 09:05:46,521 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2270 transitions. Word has length 140 [2020-09-25 09:05:46,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:46,522 INFO L479 AbstractCegarLoop]: Abstraction has 1815 states and 2270 transitions. [2020-09-25 09:05:46,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:05:46,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2270 transitions. [2020-09-25 09:05:46,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 09:05:46,528 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:46,528 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:05:46,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:05:46,528 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:46,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:46,529 INFO L82 PathProgramCache]: Analyzing trace with hash 275637238, now seen corresponding path program 1 times [2020-09-25 09:05:46,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:46,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383657117] [2020-09-25 09:05:46,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:46,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:46,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:46,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:47,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:47,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:49,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:49,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:49,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:50,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:50,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-09-25 09:05:50,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:05:50,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3554 [2020-09-25 09:05:50,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:50,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:50,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:05:50,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 09:05:50,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 09:05:50,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:50,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:50,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:50,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:50,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:50,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:50,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:05:50,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:50,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:50,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:50,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:50,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:50,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:50,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:05:50,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:50,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 09:05:50,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:50,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:50,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:50,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:50,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 09:05:50,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:05:50,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 09:05:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:50,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:50,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:50,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:50,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 09:05:50,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:50,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 09:05:50,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:50,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:05:50,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:50,773 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 102 proven. 29 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 09:05:50,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383657117] [2020-09-25 09:05:50,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:50,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:05:50,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39796621] [2020-09-25 09:05:50,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:05:50,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:50,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:05:50,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:05:50,777 INFO L87 Difference]: Start difference. First operand 1815 states and 2270 transitions. Second operand 8 states. [2020-09-25 09:05:54,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:54,573 INFO L93 Difference]: Finished difference Result 4986 states and 6579 transitions. [2020-09-25 09:05:54,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 09:05:54,574 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 208 [2020-09-25 09:05:54,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:54,607 INFO L225 Difference]: With dead ends: 4986 [2020-09-25 09:05:54,608 INFO L226 Difference]: Without dead ends: 3336 [2020-09-25 09:05:54,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:05:54,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2020-09-25 09:05:54,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 2942. [2020-09-25 09:05:54,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2942 states. [2020-09-25 09:05:54,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2942 states to 2942 states and 3916 transitions. [2020-09-25 09:05:54,779 INFO L78 Accepts]: Start accepts. Automaton has 2942 states and 3916 transitions. Word has length 208 [2020-09-25 09:05:54,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:54,780 INFO L479 AbstractCegarLoop]: Abstraction has 2942 states and 3916 transitions. [2020-09-25 09:05:54,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:05:54,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2942 states and 3916 transitions. [2020-09-25 09:05:54,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-09-25 09:05:54,785 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:54,785 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:05:54,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:05:54,786 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:54,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:54,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1170652356, now seen corresponding path program 1 times [2020-09-25 09:05:54,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:54,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110342901] [2020-09-25 09:05:54,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:54,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:54,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:55,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:55,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:55,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:59,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:59,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:59,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-09-25 09:05:59,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:05:59,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 09:05:59,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:59,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:59,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:59,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 09:05:59,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 09:05:59,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:05:59,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:59,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:59,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:59,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:59,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:59,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:05:59,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:59,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:59,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:59,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:59,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:59,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:59,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:59,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:00,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:00,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:06:00,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:00,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 09:06:00,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:00,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:00,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:00,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:00,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 09:06:00,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:00,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 09:06:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:00,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:00,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:00,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:06:00,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:00,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 09:06:00,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:00,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:00,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:00,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:00,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 09:06:00,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:00,372 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:06:00,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110342901] [2020-09-25 09:06:00,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:00,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:06:00,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606657753] [2020-09-25 09:06:00,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:06:00,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:00,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:06:00,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:06:00,377 INFO L87 Difference]: Start difference. First operand 2942 states and 3916 transitions. Second operand 7 states. [2020-09-25 09:06:02,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:02,954 INFO L93 Difference]: Finished difference Result 6877 states and 9559 transitions. [2020-09-25 09:06:02,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:06:02,961 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2020-09-25 09:06:02,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:02,982 INFO L225 Difference]: With dead ends: 6877 [2020-09-25 09:06:02,982 INFO L226 Difference]: Without dead ends: 3450 [2020-09-25 09:06:02,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:06:03,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3450 states. [2020-09-25 09:06:03,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3450 to 3062. [2020-09-25 09:06:03,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3062 states. [2020-09-25 09:06:03,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3062 states to 3062 states and 3965 transitions. [2020-09-25 09:06:03,111 INFO L78 Accepts]: Start accepts. Automaton has 3062 states and 3965 transitions. Word has length 221 [2020-09-25 09:06:03,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:03,113 INFO L479 AbstractCegarLoop]: Abstraction has 3062 states and 3965 transitions. [2020-09-25 09:06:03,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:06:03,114 INFO L276 IsEmpty]: Start isEmpty. Operand 3062 states and 3965 transitions. [2020-09-25 09:06:03,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 09:06:03,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:03,119 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:06:03,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:06:03,119 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:03,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:03,120 INFO L82 PathProgramCache]: Analyzing trace with hash -2052161345, now seen corresponding path program 1 times [2020-09-25 09:06:03,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:03,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850953920] [2020-09-25 09:06:03,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:03,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:03,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:03,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:04,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking...