/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:34:11,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:34:11,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:34:11,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:34:11,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:34:11,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:34:11,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:34:11,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:34:11,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:34:11,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:34:11,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:34:11,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:34:11,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:34:11,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:34:11,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:34:11,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:34:11,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:34:11,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:34:11,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:34:11,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:34:11,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:34:11,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:34:11,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:34:11,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:34:11,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:34:11,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:34:11,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:34:11,939 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:34:11,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:34:11,950 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:34:11,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:34:11,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:34:11,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:34:11,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:34:11,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:34:11,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:34:11,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:34:11,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:34:11,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:34:11,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:34:11,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:34:11,967 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:34:11,993 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:34:11,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:34:11,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:34:11,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:34:11,995 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:34:11,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:34:11,995 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:34:11,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:34:11,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:34:11,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:34:11,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:34:11,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:34:11,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:34:11,997 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:34:11,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:34:11,997 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:34:11,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:34:11,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:34:11,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:34:11,998 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:34:11,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:34:11,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:34:11,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:34:11,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:34:11,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:34:11,999 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:34:11,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:34:11,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:34:12,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:34:12,000 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:34:12,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:34:12,448 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:34:12,453 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:34:12,455 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:34:12,457 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:34:12,458 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label43.c [2020-09-25 05:34:12,536 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e1e836ea/09ec4e1b2f9741829bcaffba8c3ab706/FLAG731bdacec [2020-09-25 05:34:13,181 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:34:13,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label43.c [2020-09-25 05:34:13,194 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e1e836ea/09ec4e1b2f9741829bcaffba8c3ab706/FLAG731bdacec [2020-09-25 05:34:13,422 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e1e836ea/09ec4e1b2f9741829bcaffba8c3ab706 [2020-09-25 05:34:13,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:34:13,443 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:34:13,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:13,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:34:13,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:34:13,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:13" (1/1) ... [2020-09-25 05:34:13,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4757cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:13, skipping insertion in model container [2020-09-25 05:34:13,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:13" (1/1) ... [2020-09-25 05:34:13,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:34:13,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:34:14,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:14,068 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:34:14,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:14,182 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:34:14,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:14 WrapperNode [2020-09-25 05:34:14,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:14,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:34:14,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:34:14,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:34:14,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:14" (1/1) ... [2020-09-25 05:34:14,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:14" (1/1) ... [2020-09-25 05:34:14,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:14" (1/1) ... [2020-09-25 05:34:14,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:14" (1/1) ... [2020-09-25 05:34:14,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:14" (1/1) ... [2020-09-25 05:34:14,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:14" (1/1) ... [2020-09-25 05:34:14,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:14" (1/1) ... [2020-09-25 05:34:14,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:34:14,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:34:14,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:34:14,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:34:14,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:34:14,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:34:14,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:34:14,371 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:34:14,371 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:34:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:34:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:34:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:34:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:34:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:34:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:34:14,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:34:15,838 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:34:15,842 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:34:15,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:34:15 BoogieIcfgContainer [2020-09-25 05:34:15,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:34:15,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:34:15,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:34:15,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:34:15,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:34:13" (1/3) ... [2020-09-25 05:34:15,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f42e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:34:15, skipping insertion in model container [2020-09-25 05:34:15,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:14" (2/3) ... [2020-09-25 05:34:15,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f42e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:34:15, skipping insertion in model container [2020-09-25 05:34:15,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:34:15" (3/3) ... [2020-09-25 05:34:15,871 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label43.c [2020-09-25 05:34:15,884 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:34:15,904 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:34:15,926 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:34:15,973 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:34:15,974 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:34:15,974 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:34:15,974 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:34:15,974 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:34:15,975 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:34:15,975 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:34:15,975 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:34:16,015 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 05:34:16,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 05:34:16,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:16,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:16,054 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:16,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:16,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1333625535, now seen corresponding path program 1 times [2020-09-25 05:34:16,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:16,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283324542] [2020-09-25 05:34:16,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:16,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:16,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:17,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:17,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:18,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:19,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:20,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:21,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:21,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 05:34:21,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:34:21,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:34:21,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:21,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:21,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:34:21,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:34:21,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 05:34:21,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:34:21,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:21,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:21,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:21,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:21,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:21,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:21,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 05:34:21,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:21,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:21,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:21,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:21,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:34:21,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:34:21,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:21,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283324542] [2020-09-25 05:34:21,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:34:21,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:34:21,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977337526] [2020-09-25 05:34:21,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:34:21,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:21,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:34:21,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:34:21,878 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 05:34:23,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:23,977 INFO L93 Difference]: Finished difference Result 1235 states and 1633 transitions. [2020-09-25 05:34:23,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:34:23,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-09-25 05:34:23,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:24,003 INFO L225 Difference]: With dead ends: 1235 [2020-09-25 05:34:24,003 INFO L226 Difference]: Without dead ends: 661 [2020-09-25 05:34:24,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:24,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-09-25 05:34:24,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 605. [2020-09-25 05:34:24,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-09-25 05:34:24,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 715 transitions. [2020-09-25 05:34:24,141 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 715 transitions. Word has length 156 [2020-09-25 05:34:24,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:24,142 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 715 transitions. [2020-09-25 05:34:24,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:34:24,143 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 715 transitions. [2020-09-25 05:34:24,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 05:34:24,148 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:24,149 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:24,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:34:24,149 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:24,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:24,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1479520420, now seen corresponding path program 1 times [2020-09-25 05:34:24,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:24,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318503886] [2020-09-25 05:34:24,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:24,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:24,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:24,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:25,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:27,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:28,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:28,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:29,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:29,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 05:34:29,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:34:29,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:34:29,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:29,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:29,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:29,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 05:34:29,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 05:34:29,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:29,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:29,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:29,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:29,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:29,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:29,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:34:29,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:29,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:29,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:29,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:29,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:29,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:29,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:29,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:29,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:29,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:34:29,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:29,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:34:29,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:29,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:29,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:29,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:29,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:34:29,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:29,461 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:29,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318503886] [2020-09-25 05:34:29,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:29,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:34:29,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380594917] [2020-09-25 05:34:29,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:34:29,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:29,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:34:29,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:29,465 INFO L87 Difference]: Start difference. First operand 605 states and 715 transitions. Second operand 5 states. [2020-09-25 05:34:31,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:31,339 INFO L93 Difference]: Finished difference Result 1505 states and 1856 transitions. [2020-09-25 05:34:31,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:34:31,340 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-09-25 05:34:31,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:31,354 INFO L225 Difference]: With dead ends: 1505 [2020-09-25 05:34:31,354 INFO L226 Difference]: Without dead ends: 924 [2020-09-25 05:34:31,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:34:31,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-09-25 05:34:31,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 891. [2020-09-25 05:34:31,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 05:34:31,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1084 transitions. [2020-09-25 05:34:31,418 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1084 transitions. Word has length 173 [2020-09-25 05:34:31,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:31,420 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1084 transitions. [2020-09-25 05:34:31,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:34:31,421 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1084 transitions. [2020-09-25 05:34:31,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-25 05:34:31,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:31,438 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:31,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:34:31,439 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:31,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:31,439 INFO L82 PathProgramCache]: Analyzing trace with hash -420325430, now seen corresponding path program 1 times [2020-09-25 05:34:31,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:31,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307065330] [2020-09-25 05:34:31,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:31,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:31,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:31,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:32,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:34,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:34,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:36,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:36,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-09-25 05:34:36,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:34:36,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 05:34:36,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:36,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:36,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:36,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:34:36,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 05:34:36,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:36,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:36,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:36,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:36,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:36,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:36,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:34:36,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:36,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:36,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:36,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:36,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:36,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:36,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:36,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:36,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:36,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:36,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 05:34:36,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:36,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:36,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:36,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:36,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:34:36,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:36,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:34:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:36,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:36,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:36,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 05:34:36,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:36,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 05:34:36,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:36,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:36,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:36,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:36,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 05:34:36,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:36,985 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:34:36,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307065330] [2020-09-25 05:34:36,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:36,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:34:36,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314733140] [2020-09-25 05:34:36,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:34:36,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:36,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:34:36,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:34:36,998 INFO L87 Difference]: Start difference. First operand 891 states and 1084 transitions. Second operand 7 states. [2020-09-25 05:34:39,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:39,189 INFO L93 Difference]: Finished difference Result 2144 states and 2702 transitions. [2020-09-25 05:34:39,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:34:39,190 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 218 [2020-09-25 05:34:39,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:39,203 INFO L225 Difference]: With dead ends: 2144 [2020-09-25 05:34:39,204 INFO L226 Difference]: Without dead ends: 1277 [2020-09-25 05:34:39,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:34:39,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2020-09-25 05:34:39,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1077. [2020-09-25 05:34:39,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-09-25 05:34:39,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1328 transitions. [2020-09-25 05:34:39,276 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1328 transitions. Word has length 218 [2020-09-25 05:34:39,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:39,277 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1328 transitions. [2020-09-25 05:34:39,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:34:39,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1328 transitions. [2020-09-25 05:34:39,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 05:34:39,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:39,286 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:39,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:34:39,286 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:39,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:39,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1776606615, now seen corresponding path program 1 times [2020-09-25 05:34:39,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:39,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468365768] [2020-09-25 05:34:39,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:39,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:39,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:39,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:40,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:41,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:41,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:41,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:41,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:42,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:42,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:44,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:44,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-25 05:34:44,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:34:44,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 05:34:44,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:44,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:44,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:34:44,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 05:34:44,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 05:34:44,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:44,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:44,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:44,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:44,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:44,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:44,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:34:44,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:44,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:44,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:44,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:44,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:44,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:44,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:44,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:44,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:44,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:34:44,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:44,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 05:34:44,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:44,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:44,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:34:44,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:44,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:34:44,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:44,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 05:34:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:44,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:44,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:44,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 05:34:44,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:44,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 05:34:44,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:44,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:44,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:44,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:44,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 05:34:44,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:44,734 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:34:44,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468365768] [2020-09-25 05:34:44,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:44,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:34:44,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516194770] [2020-09-25 05:34:44,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:34:44,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:44,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:34:44,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:34:44,739 INFO L87 Difference]: Start difference. First operand 1077 states and 1328 transitions. Second operand 8 states. [2020-09-25 05:34:47,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:47,923 INFO L93 Difference]: Finished difference Result 2883 states and 3642 transitions. [2020-09-25 05:34:47,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 05:34:47,924 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2020-09-25 05:34:47,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:47,937 INFO L225 Difference]: With dead ends: 2883 [2020-09-25 05:34:47,937 INFO L226 Difference]: Without dead ends: 1830 [2020-09-25 05:34:47,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:34:47,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2020-09-25 05:34:48,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1706. [2020-09-25 05:34:48,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1706 states. [2020-09-25 05:34:48,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 2090 transitions. [2020-09-25 05:34:48,014 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 2090 transitions. Word has length 225 [2020-09-25 05:34:48,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:48,015 INFO L479 AbstractCegarLoop]: Abstraction has 1706 states and 2090 transitions. [2020-09-25 05:34:48,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:34:48,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 2090 transitions. [2020-09-25 05:34:48,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-25 05:34:48,025 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:48,025 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:48,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:34:48,026 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:48,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:48,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1031297254, now seen corresponding path program 1 times [2020-09-25 05:34:48,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:48,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548566011] [2020-09-25 05:34:48,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:48,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:48,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:48,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:48,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:48,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:48,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:48,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:48,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:48,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:49,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:49,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:53,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:53,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-09-25 05:34:53,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:34:53,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:34:53,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:53,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:53,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:53,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 05:34:53,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 05:34:53,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:53,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:53,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:53,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:53,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:53,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:53,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:34:53,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:53,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:53,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:53,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:53,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:53,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:53,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:53,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:53,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:53,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:34:53,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:53,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:34:53,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:53,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:53,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:53,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:53,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:53,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:53,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 05:34:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:53,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:53,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:53,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 05:34:53,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:53,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 05:34:53,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:53,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:53,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:53,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:53,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 05:34:53,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:53,434 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 05:34:53,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548566011] [2020-09-25 05:34:53,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:53,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:34:53,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038921162] [2020-09-25 05:34:53,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:34:53,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:53,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:34:53,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:53,437 INFO L87 Difference]: Start difference. First operand 1706 states and 2090 transitions. Second operand 5 states. [2020-09-25 05:34:55,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:55,348 INFO L93 Difference]: Finished difference Result 3970 states and 4895 transitions. [2020-09-25 05:34:55,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:34:55,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 240 [2020-09-25 05:34:55,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:55,358 INFO L225 Difference]: With dead ends: 3970 [2020-09-25 05:34:55,358 INFO L226 Difference]: Without dead ends: 1637 [2020-09-25 05:34:55,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:34:55,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2020-09-25 05:34:55,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1627. [2020-09-25 05:34:55,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1627 states. [2020-09-25 05:34:55,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 1965 transitions. [2020-09-25 05:34:55,412 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 1965 transitions. Word has length 240 [2020-09-25 05:34:55,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:55,412 INFO L479 AbstractCegarLoop]: Abstraction has 1627 states and 1965 transitions. [2020-09-25 05:34:55,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:34:55,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 1965 transitions. [2020-09-25 05:34:55,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 05:34:55,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:55,421 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:55,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:34:55,421 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:55,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:55,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1508954734, now seen corresponding path program 1 times [2020-09-25 05:34:55,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:55,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868504453] [2020-09-25 05:34:55,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:55,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:55,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:55,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:55,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:55,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:56,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:56,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:56,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:58,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:58,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:58,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:59,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:59,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:00,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:00,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-09-25 05:35:00,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 05:35:00,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:35:00,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:00,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-09-25 05:35:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 05:35:00,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:00,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:00,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:00,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:00,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:35:00,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:00,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:35:00,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:00,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:00,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:00,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:00,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:00,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:00,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:35:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:00,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:00,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:00,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:35:00,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:00,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:35:00,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:00,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:00,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:00,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:00,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:00,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:00,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 05:35:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:00,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:00,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:00,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 05:35:00,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:00,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 05:35:00,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:00,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:00,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:00,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:00,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 05:35:00,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:00,766 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 05:35:00,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868504453] [2020-09-25 05:35:00,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:00,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:35:00,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539894855] [2020-09-25 05:35:00,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:00,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:00,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:00,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:00,769 INFO L87 Difference]: Start difference. First operand 1627 states and 1965 transitions. Second operand 5 states. [2020-09-25 05:35:02,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:02,569 INFO L93 Difference]: Finished difference Result 3246 states and 3927 transitions. [2020-09-25 05:35:02,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:35:02,570 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 242 [2020-09-25 05:35:02,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:02,578 INFO L225 Difference]: With dead ends: 3246 [2020-09-25 05:35:02,578 INFO L226 Difference]: Without dead ends: 1643 [2020-09-25 05:35:02,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:35:02,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2020-09-25 05:35:02,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1625. [2020-09-25 05:35:02,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1625 states. [2020-09-25 05:35:02,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 1893 transitions. [2020-09-25 05:35:02,623 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 1893 transitions. Word has length 242 [2020-09-25 05:35:02,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:02,623 INFO L479 AbstractCegarLoop]: Abstraction has 1625 states and 1893 transitions. [2020-09-25 05:35:02,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:02,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 1893 transitions. [2020-09-25 05:35:02,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-25 05:35:02,631 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:02,632 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:35:02,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:35:02,632 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:02,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:02,632 INFO L82 PathProgramCache]: Analyzing trace with hash -828806245, now seen corresponding path program 1 times [2020-09-25 05:35:02,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:02,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55276101] [2020-09-25 05:35:02,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:02,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:02,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:02,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:03,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:04,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking...