/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:30:47,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:30:47,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:30:47,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:30:47,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:30:47,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:30:47,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:30:47,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:30:47,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:30:47,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:30:47,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:30:47,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:30:47,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:30:47,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:30:47,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:30:47,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:30:47,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:30:47,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:30:47,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:30:47,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:30:47,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:30:47,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:30:47,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:30:47,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:30:48,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:30:48,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:30:48,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:30:48,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:30:48,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:30:48,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:30:48,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:30:48,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:30:48,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:30:48,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:30:48,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:30:48,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:30:48,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:30:48,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:30:48,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:30:48,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:30:48,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:30:48,019 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 04:30:48,063 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:30:48,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:30:48,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:30:48,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:30:48,066 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:30:48,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:30:48,067 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:30:48,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:30:48,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:30:48,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:30:48,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:30:48,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:30:48,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:30:48,069 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:30:48,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:30:48,070 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:30:48,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:30:48,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:30:48,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:30:48,070 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:30:48,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:30:48,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:30:48,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:30:48,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:30:48,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:30:48,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:30:48,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:30:48,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:30:48,072 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:30:48,072 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:30:48,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:30:48,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:30:48,523 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:30:48,524 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:30:48,525 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:30:48,526 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-25 04:30:48,603 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/12e861ce0/4940c93d9d304d47a67cd6e33f453528/FLAG312271ffc [2020-09-25 04:30:49,242 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:30:49,243 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-25 04:30:49,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/12e861ce0/4940c93d9d304d47a67cd6e33f453528/FLAG312271ffc [2020-09-25 04:30:49,475 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/12e861ce0/4940c93d9d304d47a67cd6e33f453528 [2020-09-25 04:30:49,490 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:30:49,497 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:30:49,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:30:49,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:30:49,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:30:49,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:30:49" (1/1) ... [2020-09-25 04:30:49,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3294985c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:49, skipping insertion in model container [2020-09-25 04:30:49,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:30:49" (1/1) ... [2020-09-25 04:30:49,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:30:49,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:30:50,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:30:50,166 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:30:50,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:30:50,308 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:30:50,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:50 WrapperNode [2020-09-25 04:30:50,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:30:50,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:30:50,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:30:50,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:30:50,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:50" (1/1) ... [2020-09-25 04:30:50,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:50" (1/1) ... [2020-09-25 04:30:50,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:50" (1/1) ... [2020-09-25 04:30:50,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:50" (1/1) ... [2020-09-25 04:30:50,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:50" (1/1) ... [2020-09-25 04:30:50,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:50" (1/1) ... [2020-09-25 04:30:50,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:50" (1/1) ... [2020-09-25 04:30:50,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:30:50,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:30:50,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:30:50,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:30:50,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:50" (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 04:30:50,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:30:50,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:30:50,516 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:30:50,516 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:30:50,516 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:30:50,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:30:50,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:30:50,517 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:30:50,517 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:30:50,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:30:50,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:30:52,036 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:30:52,036 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:30:52,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:30:52 BoogieIcfgContainer [2020-09-25 04:30:52,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:30:52,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:30:52,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:30:52,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:30:52,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:30:49" (1/3) ... [2020-09-25 04:30:52,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e6e472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:30:52, skipping insertion in model container [2020-09-25 04:30:52,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:50" (2/3) ... [2020-09-25 04:30:52,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e6e472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:30:52, skipping insertion in model container [2020-09-25 04:30:52,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:30:52" (3/3) ... [2020-09-25 04:30:52,055 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label44.c [2020-09-25 04:30:52,068 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:30:52,079 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:30:52,102 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:30:52,136 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:30:52,136 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:30:52,136 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:30:52,136 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:30:52,136 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:30:52,137 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:30:52,137 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:30:52,137 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:30:52,167 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 04:30:52,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 04:30:52,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:52,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:52,181 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:52,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:52,189 INFO L82 PathProgramCache]: Analyzing trace with hash 2145887279, now seen corresponding path program 1 times [2020-09-25 04:30:52,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:52,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972471129] [2020-09-25 04:30:52,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:52,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:52,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:53,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:53,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:30:53,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:30:53,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 802 [2020-09-25 04:30:53,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:53,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:53,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:30:53,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 04:30:53,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 04:30:53,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:30:53,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:53,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:53,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:53,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:53,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:53,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 04:30:53,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:53,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:53,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:53,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:53,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:30:53,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:53,411 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 04:30:53,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972471129] [2020-09-25 04:30:53,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:30:53,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:30:53,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001181963] [2020-09-25 04:30:53,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:30:53,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:53,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:30:53,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:30:53,453 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 04:30:55,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:55,303 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 04:30:55,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:30:55,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-09-25 04:30:55,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:55,328 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 04:30:55,328 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 04:30:55,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 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 04:30:55,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 04:30:55,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 04:30:55,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 04:30:55,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 04:30:55,443 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 76 [2020-09-25 04:30:55,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:55,445 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 04:30:55,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:30:55,446 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 04:30:55,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 04:30:55,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:55,462 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:55,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:30:55,462 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:55,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:55,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1884656088, now seen corresponding path program 1 times [2020-09-25 04:30:55,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:55,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735941551] [2020-09-25 04:30:55,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:55,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:55,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:55,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:56,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:56,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:58,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:58,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 04:30:58,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:30:58,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2655 [2020-09-25 04:30:58,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:58,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:58,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:58,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 04:30:58,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 04:30:58,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:58,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:58,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:58,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:58,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:58,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:58,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:30:58,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:58,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:58,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:58,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:58,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:58,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:30:58,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:58,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:58,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:58,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 04:30:58,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:58,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 04:30:58,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:58,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:58,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:58,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:58,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:30:58,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:58,500 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:58,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735941551] [2020-09-25 04:30:58,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:58,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:58,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337224157] [2020-09-25 04:30:58,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:58,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:58,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:58,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:58,504 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 5 states. [2020-09-25 04:31:00,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:00,386 INFO L93 Difference]: Finished difference Result 1419 states and 1830 transitions. [2020-09-25 04:31:00,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:00,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 04:31:00,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:00,393 INFO L225 Difference]: With dead ends: 1419 [2020-09-25 04:31:00,394 INFO L226 Difference]: Without dead ends: 891 [2020-09-25 04:31:00,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:00,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-09-25 04:31:00,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 850. [2020-09-25 04:31:00,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-09-25 04:31:00,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1047 transitions. [2020-09-25 04:31:00,442 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1047 transitions. Word has length 156 [2020-09-25 04:31:00,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:00,443 INFO L479 AbstractCegarLoop]: Abstraction has 850 states and 1047 transitions. [2020-09-25 04:31:00,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:00,444 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1047 transitions. [2020-09-25 04:31:00,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 04:31:00,446 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:00,446 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:00,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:31:00,447 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:00,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:00,447 INFO L82 PathProgramCache]: Analyzing trace with hash -430892963, now seen corresponding path program 1 times [2020-09-25 04:31:00,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:00,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366462488] [2020-09-25 04:31:00,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:00,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:00,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:00,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:01,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:02,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:03,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:05,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:05,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 04:31:05,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:31:05,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:31:05,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:05,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:05,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:31:05,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 04:31:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 04:31:05,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:05,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:05,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:05,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:05,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:05,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:05,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:31:05,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:05,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:05,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:05,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:05,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:05,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:05,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:05,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:05,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:31:05,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:05,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 04:31:05,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:05,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:05,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:31:05,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:05,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 04:31:05,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:05,860 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:05,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366462488] [2020-09-25 04:31:05,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:05,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:31:05,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879576244] [2020-09-25 04:31:05,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:31:05,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:05,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:31:05,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:05,863 INFO L87 Difference]: Start difference. First operand 850 states and 1047 transitions. Second operand 6 states. [2020-09-25 04:31:08,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:08,649 INFO L93 Difference]: Finished difference Result 2692 states and 3487 transitions. [2020-09-25 04:31:08,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:31:08,649 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2020-09-25 04:31:08,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:08,675 INFO L225 Difference]: With dead ends: 2692 [2020-09-25 04:31:08,675 INFO L226 Difference]: Without dead ends: 1857 [2020-09-25 04:31:08,679 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 04:31:08,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2020-09-25 04:31:08,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1780. [2020-09-25 04:31:08,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1780 states. [2020-09-25 04:31:08,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1780 states to 1780 states and 2286 transitions. [2020-09-25 04:31:08,785 INFO L78 Accepts]: Start accepts. Automaton has 1780 states and 2286 transitions. Word has length 165 [2020-09-25 04:31:08,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:08,787 INFO L479 AbstractCegarLoop]: Abstraction has 1780 states and 2286 transitions. [2020-09-25 04:31:08,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:31:08,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1780 states and 2286 transitions. [2020-09-25 04:31:08,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 04:31:08,798 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:08,798 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:08,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:31:08,799 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:08,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:08,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1256012571, now seen corresponding path program 1 times [2020-09-25 04:31:08,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:08,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094743566] [2020-09-25 04:31:08,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:08,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:09,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:09,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:09,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:09,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:12,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:12,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 04:31:12,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:31:12,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3373 [2020-09-25 04:31:12,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:12,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:12,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:12,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-25 04:31:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 04:31:12,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:31:12,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:12,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:12,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:12,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:12,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:12,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:31:12,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:12,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:12,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:12,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:12,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:12,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:12,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:12,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:12,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:12,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 04:31:12,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:12,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 04:31:12,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:12,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:12,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:12,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:12,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:31:12,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:12,504 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:12,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094743566] [2020-09-25 04:31:12,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:12,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:31:12,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124035944] [2020-09-25 04:31:12,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:31:12,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:12,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:31:12,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:12,509 INFO L87 Difference]: Start difference. First operand 1780 states and 2286 transitions. Second operand 6 states. [2020-09-25 04:31:14,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:14,795 INFO L93 Difference]: Finished difference Result 6157 states and 8350 transitions. [2020-09-25 04:31:14,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:31:14,796 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2020-09-25 04:31:14,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:14,822 INFO L225 Difference]: With dead ends: 6157 [2020-09-25 04:31:14,822 INFO L226 Difference]: Without dead ends: 4392 [2020-09-25 04:31:14,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:31:14,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4392 states. [2020-09-25 04:31:14,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4392 to 3762. [2020-09-25 04:31:14,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3762 states. [2020-09-25 04:31:15,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3762 states to 3762 states and 4854 transitions. [2020-09-25 04:31:15,010 INFO L78 Accepts]: Start accepts. Automaton has 3762 states and 4854 transitions. Word has length 167 [2020-09-25 04:31:15,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:15,011 INFO L479 AbstractCegarLoop]: Abstraction has 3762 states and 4854 transitions. [2020-09-25 04:31:15,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:31:15,011 INFO L276 IsEmpty]: Start isEmpty. Operand 3762 states and 4854 transitions. [2020-09-25 04:31:15,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-25 04:31:15,020 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:15,020 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 04:31:15,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:31:15,021 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:15,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:15,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1028592363, now seen corresponding path program 1 times [2020-09-25 04:31:15,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:15,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340850371] [2020-09-25 04:31:15,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:15,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:15,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:15,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:16,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:16,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:18,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:20,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:20,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-09-25 04:31:20,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:31:20,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 04:31:20,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:20,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:20,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:20,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 04:31:20,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 04:31:20,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:20,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:20,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:20,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:20,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:20,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:20,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:31:20,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:20,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:20,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:20,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:20,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:20,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:20,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:20,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:20,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:20,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:31:20,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:20,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 04:31:20,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:20,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:20,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:20,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:20,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:31:20,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:20,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 04:31:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:20,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:20,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:20,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 04:31:20,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:20,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 04:31:20,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:20,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:20,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:20,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:31:20,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 04:31:20,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:20,669 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:31:20,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340850371] [2020-09-25 04:31:20,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:20,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:31:20,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389489375] [2020-09-25 04:31:20,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:31:20,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:20,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:31:20,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:31:20,673 INFO L87 Difference]: Start difference. First operand 3762 states and 4854 transitions. Second operand 7 states. [2020-09-25 04:31:23,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:23,215 INFO L93 Difference]: Finished difference Result 8352 states and 10957 transitions. [2020-09-25 04:31:23,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:31:23,216 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 247 [2020-09-25 04:31:23,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:23,249 INFO L225 Difference]: With dead ends: 8352 [2020-09-25 04:31:23,249 INFO L226 Difference]: Without dead ends: 4605 [2020-09-25 04:31:23,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:31:23,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2020-09-25 04:31:23,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 4281. [2020-09-25 04:31:23,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4281 states. [2020-09-25 04:31:23,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4281 states to 4281 states and 5475 transitions. [2020-09-25 04:31:23,421 INFO L78 Accepts]: Start accepts. Automaton has 4281 states and 5475 transitions. Word has length 247 [2020-09-25 04:31:23,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:23,422 INFO L479 AbstractCegarLoop]: Abstraction has 4281 states and 5475 transitions. [2020-09-25 04:31:23,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:31:23,422 INFO L276 IsEmpty]: Start isEmpty. Operand 4281 states and 5475 transitions. [2020-09-25 04:31:23,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-25 04:31:23,430 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:23,431 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 04:31:23,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:31:23,431 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:23,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:23,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1502185898, now seen corresponding path program 1 times [2020-09-25 04:31:23,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:23,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375552475] [2020-09-25 04:31:23,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:23,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:23,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:23,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:25,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:25,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:25,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:28,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:28,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-09-25 04:31:28,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:31:28,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 04:31:28,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:28,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:28,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:28,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-25 04:31:28,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 04:31:28,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:31:28,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:28,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:28,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:28,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:28,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:28,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:31:28,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:28,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:28,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:28,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:28,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:28,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:28,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:28,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:28,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:28,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 04:31:28,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:28,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 04:31:28,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:28,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:28,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:28,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:28,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 04:31:28,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:28,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 04:31:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:28,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:28,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:28,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 04:31:28,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:28,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 04:31:28,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:28,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:28,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:28,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:31:28,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 04:31:28,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:29,010 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:31:29,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375552475] [2020-09-25 04:31:29,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:29,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:31:29,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272807566] [2020-09-25 04:31:29,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:31:29,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:29,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:31:29,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:31:29,014 INFO L87 Difference]: Start difference. First operand 4281 states and 5475 transitions. Second operand 7 states. [2020-09-25 04:31:31,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:31,711 INFO L93 Difference]: Finished difference Result 9884 states and 12889 transitions. [2020-09-25 04:31:31,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:31:31,715 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 254 [2020-09-25 04:31:31,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:31,744 INFO L225 Difference]: With dead ends: 9884 [2020-09-25 04:31:31,744 INFO L226 Difference]: Without dead ends: 5618 [2020-09-25 04:31:31,759 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 04:31:31,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5618 states. [2020-09-25 04:31:31,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5618 to 5556. [2020-09-25 04:31:31,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5556 states. [2020-09-25 04:31:31,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5556 states to 5556 states and 7248 transitions. [2020-09-25 04:31:31,929 INFO L78 Accepts]: Start accepts. Automaton has 5556 states and 7248 transitions. Word has length 254 [2020-09-25 04:31:31,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:31,929 INFO L479 AbstractCegarLoop]: Abstraction has 5556 states and 7248 transitions. [2020-09-25 04:31:31,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:31:31,929 INFO L276 IsEmpty]: Start isEmpty. Operand 5556 states and 7248 transitions. [2020-09-25 04:31:31,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-09-25 04:31:31,943 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:31,944 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2020-09-25 04:31:31,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:31:31,944 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:31,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:31,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1668169033, now seen corresponding path program 1 times [2020-09-25 04:31:31,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:31,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56470788] [2020-09-25 04:31:31,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:32,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:32,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:32,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:32,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:33,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:34,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:34,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:35,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking...