/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_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:30:27,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:30:27,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:30:27,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:30:27,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:30:27,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:30:27,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:30:27,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:30:27,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:30:27,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:30:27,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:30:27,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:30:27,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:30:27,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:30:27,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:30:27,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:30:27,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:30:27,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:30:27,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:30:27,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:30:27,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:30:27,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:30:27,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:30:27,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:30:27,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:30:27,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:30:27,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:30:27,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:30:27,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:30:27,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:30:27,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:30:27,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:30:27,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:30:27,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:30:27,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:30:27,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:30:27,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:30:27,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:30:27,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:30:27,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:30:28,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:30:28,003 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 04:30:28,067 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:30:28,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:30:28,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:30:28,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:30:28,069 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:30:28,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:30:28,070 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:30:28,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:30:28,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:30:28,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:30:28,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:30:28,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:30:28,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:30:28,071 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:30:28,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:30:28,071 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:30:28,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:30:28,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:30:28,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:30:28,072 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:30:28,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:30:28,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:30:28,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:30:28,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:30:28,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:30:28,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:30:28,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:30:28,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:30:28,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:30:28,074 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 04:30:28,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:30:28,602 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:30:28,607 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:30:28,609 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:30:28,611 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:30:28,612 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label34.c [2020-09-25 04:30:28,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d96af741/a6e20a07861e4fac94ed39b02818107d/FLAGe9c66ee4f [2020-09-25 04:30:29,365 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:30:29,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label34.c [2020-09-25 04:30:29,380 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d96af741/a6e20a07861e4fac94ed39b02818107d/FLAGe9c66ee4f [2020-09-25 04:30:29,619 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d96af741/a6e20a07861e4fac94ed39b02818107d [2020-09-25 04:30:29,634 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:30:29,639 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:30:29,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:30:29,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:30:29,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:30:29,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:30:29" (1/1) ... [2020-09-25 04:30:29,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:29, skipping insertion in model container [2020-09-25 04:30:29,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:30:29" (1/1) ... [2020-09-25 04:30:29,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:30:29,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:30:30,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:30:30,223 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:30:30,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:30:30,462 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:30:30,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:30 WrapperNode [2020-09-25 04:30:30,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:30:30,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:30:30,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:30:30,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:30:30,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:30" (1/1) ... [2020-09-25 04:30:30,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:30" (1/1) ... [2020-09-25 04:30:30,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:30" (1/1) ... [2020-09-25 04:30:30,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:30" (1/1) ... [2020-09-25 04:30:30,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:30" (1/1) ... [2020-09-25 04:30:30,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:30" (1/1) ... [2020-09-25 04:30:30,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:30" (1/1) ... [2020-09-25 04:30:30,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:30:30,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:30:30,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:30:30,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:30:30,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:30" (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 04:30:30,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:30:30,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:30:30,672 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:30:30,672 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:30:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:30:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:30:30,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:30:30,673 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:30:30,673 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:30:30,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:30:30,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:30:32,201 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:30:32,202 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:30:32,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:30:32 BoogieIcfgContainer [2020-09-25 04:30:32,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:30:32,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:30:32,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:30:32,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:30:32,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:30:29" (1/3) ... [2020-09-25 04:30:32,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:30:32, skipping insertion in model container [2020-09-25 04:30:32,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:30" (2/3) ... [2020-09-25 04:30:32,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:30:32, skipping insertion in model container [2020-09-25 04:30:32,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:30:32" (3/3) ... [2020-09-25 04:30:32,221 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label34.c [2020-09-25 04:30:32,234 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:30:32,246 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:30:32,270 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:30:32,304 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:30:32,304 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:30:32,304 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:30:32,304 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:30:32,304 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:30:32,305 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:30:32,305 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:30:32,305 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:30:32,338 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 04:30:32,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 04:30:32,352 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:32,354 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] [2020-09-25 04:30:32,354 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:32,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:32,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1489035705, now seen corresponding path program 1 times [2020-09-25 04:30:32,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:32,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079871953] [2020-09-25 04:30:32,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:32,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:32,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:32,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:33,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:33,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 04:30:33,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:30:33,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1329 [2020-09-25 04:30:33,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:33,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:33,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:30:33,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:30:33,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 04:30:33,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:30:34,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:34,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:34,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:34,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:34,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:34,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 04:30:34,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:34,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:34,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:30:34,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:34,140 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 04:30:34,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079871953] [2020-09-25 04:30:34,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:30:34,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:30:34,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559254368] [2020-09-25 04:30:34,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:30:34,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:34,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:30:34,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:30:34,173 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 04:30:36,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:36,347 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 04:30:36,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:30:36,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-09-25 04:30:36,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:36,373 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 04:30:36,373 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 04:30:36,384 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 04:30:36,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 04:30:36,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 04:30:36,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 04:30:36,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 04:30:36,494 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 82 [2020-09-25 04:30:36,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:36,495 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 04:30:36,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:30:36,495 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 04:30:36,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 04:30:36,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:36,508 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:30:36,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:30:36,509 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:36,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:36,509 INFO L82 PathProgramCache]: Analyzing trace with hash -942957376, now seen corresponding path program 1 times [2020-09-25 04:30:36,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:36,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643809615] [2020-09-25 04:30:36,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:36,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:36,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:36,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:38,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:38,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:38,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:41,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:41,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 04:30:41,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:30:41,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 04:30:41,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:41,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:41,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:30:41,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:30:41,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 04:30:41,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:41,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:41,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:41,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:41,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:41,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:41,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 04:30:41,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:41,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:41,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:41,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:41,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:30:41,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:30:41,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:41,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:41,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:41,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:30:41,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:41,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 04:30:41,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:41,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:41,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:41,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:41,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:30:41,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:42,046 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:42,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643809615] [2020-09-25 04:30:42,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:30:42,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:30:42,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427305741] [2020-09-25 04:30:42,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:30:42,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:42,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:30:42,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:30:42,052 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 7 states. [2020-09-25 04:30:44,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:44,231 INFO L93 Difference]: Finished difference Result 1330 states and 1655 transitions. [2020-09-25 04:30:44,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 04:30:44,235 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2020-09-25 04:30:44,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:44,240 INFO L225 Difference]: With dead ends: 1330 [2020-09-25 04:30:44,240 INFO L226 Difference]: Without dead ends: 769 [2020-09-25 04:30:44,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:30:44,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-09-25 04:30:44,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 731. [2020-09-25 04:30:44,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-09-25 04:30:44,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 902 transitions. [2020-09-25 04:30:44,281 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 902 transitions. Word has length 165 [2020-09-25 04:30:44,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:44,282 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 902 transitions. [2020-09-25 04:30:44,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:30:44,282 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 902 transitions. [2020-09-25 04:30:44,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 04:30:44,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:44,291 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:30:44,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:30:44,292 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:44,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:44,293 INFO L82 PathProgramCache]: Analyzing trace with hash 782475013, now seen corresponding path program 1 times [2020-09-25 04:30:44,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:44,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281162315] [2020-09-25 04:30:44,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:44,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:44,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:44,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:45,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:45,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:45,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:46,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:46,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 04:30:46,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:30:46,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2489 [2020-09-25 04:30:46,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:46,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:46,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:46,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 04:30:46,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 04:30:46,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:46,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:46,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:46,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:46,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:46,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:46,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:46,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:30:46,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:46,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:46,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:46,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:46,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:46,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:46,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:46,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:47,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:47,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:30:47,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:47,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 04:30:47,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:47,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:47,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:47,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:47,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 04:30:47,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:47,104 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 65 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:47,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281162315] [2020-09-25 04:30:47,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:47,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:47,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665245116] [2020-09-25 04:30:47,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:47,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:47,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:47,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:47,108 INFO L87 Difference]: Start difference. First operand 731 states and 902 transitions. Second operand 5 states. [2020-09-25 04:30:48,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:48,766 INFO L93 Difference]: Finished difference Result 1758 states and 2266 transitions. [2020-09-25 04:30:48,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:48,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-09-25 04:30:48,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:48,780 INFO L225 Difference]: With dead ends: 1758 [2020-09-25 04:30:48,781 INFO L226 Difference]: Without dead ends: 1042 [2020-09-25 04:30:48,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:30:48,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-09-25 04:30:48,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 1040. [2020-09-25 04:30:48,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2020-09-25 04:30:48,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1312 transitions. [2020-09-25 04:30:48,837 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1312 transitions. Word has length 165 [2020-09-25 04:30:48,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:48,843 INFO L479 AbstractCegarLoop]: Abstraction has 1040 states and 1312 transitions. [2020-09-25 04:30:48,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:48,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1312 transitions. [2020-09-25 04:30:48,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 04:30:48,854 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:48,855 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:30:48,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:30:48,855 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:48,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:48,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1039213483, now seen corresponding path program 1 times [2020-09-25 04:30:48,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:48,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656322777] [2020-09-25 04:30:48,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:48,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:49,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:49,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:49,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:51,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:52,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:52,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:53,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:53,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 04:30:53,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:30:53,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 04:30:53,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:53,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:53,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:53,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 04:30:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:30:53,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 04:30:54,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:54,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:54,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:54,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:54,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:54,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:30:54,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:54,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:54,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:54,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:54,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:54,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:54,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:54,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:54,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:54,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:30:54,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:54,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 04:30:54,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:54,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:54,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:54,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:54,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:30:54,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:54,252 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 65 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:54,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656322777] [2020-09-25 04:30:54,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:54,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:54,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530679752] [2020-09-25 04:30:54,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:54,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:54,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:54,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:54,255 INFO L87 Difference]: Start difference. First operand 1040 states and 1312 transitions. Second operand 5 states. [2020-09-25 04:30:56,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:56,271 INFO L93 Difference]: Finished difference Result 2553 states and 3379 transitions. [2020-09-25 04:30:56,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:56,274 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-09-25 04:30:56,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:56,288 INFO L225 Difference]: With dead ends: 2553 [2020-09-25 04:30:56,288 INFO L226 Difference]: Without dead ends: 1678 [2020-09-25 04:30:56,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:30:56,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2020-09-25 04:30:56,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1656. [2020-09-25 04:30:56,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1656 states. [2020-09-25 04:30:56,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2065 transitions. [2020-09-25 04:30:56,359 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2065 transitions. Word has length 171 [2020-09-25 04:30:56,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:56,360 INFO L479 AbstractCegarLoop]: Abstraction has 1656 states and 2065 transitions. [2020-09-25 04:30:56,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:56,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2065 transitions. [2020-09-25 04:30:56,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 04:30:56,369 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:56,369 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:30:56,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:30:56,369 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:56,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:56,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1276415705, now seen corresponding path program 1 times [2020-09-25 04:30:56,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:56,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737597110] [2020-09-25 04:30:56,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:56,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:56,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:56,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:58,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:00,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:00,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:00,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:01,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:01,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:01,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:01,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 04:31:01,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:31:01,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-09-25 04:31:01,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:01,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:01,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:01,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-25 04:31:01,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:31:01,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:01,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:01,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:01,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:01,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:01,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:01,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:31:01,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:01,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:01,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:01,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:01,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:01,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:31:01,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:01,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:01,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:01,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 04:31:01,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:01,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 04:31:01,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:01,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:01,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:01,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:01,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 04:31:01,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:01,744 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 65 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:01,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737597110] [2020-09-25 04:31:01,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:01,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:01,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972139466] [2020-09-25 04:31:01,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:01,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:01,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:01,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:01,748 INFO L87 Difference]: Start difference. First operand 1656 states and 2065 transitions. Second operand 5 states. [2020-09-25 04:31:03,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:03,766 INFO L93 Difference]: Finished difference Result 3773 states and 4877 transitions. [2020-09-25 04:31:03,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:03,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-09-25 04:31:03,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:03,781 INFO L225 Difference]: With dead ends: 3773 [2020-09-25 04:31:03,781 INFO L226 Difference]: Without dead ends: 2282 [2020-09-25 04:31:03,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:03,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2020-09-25 04:31:03,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 1820. [2020-09-25 04:31:03,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1820 states. [2020-09-25 04:31:03,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2265 transitions. [2020-09-25 04:31:03,856 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2265 transitions. Word has length 190 [2020-09-25 04:31:03,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:03,856 INFO L479 AbstractCegarLoop]: Abstraction has 1820 states and 2265 transitions. [2020-09-25 04:31:03,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:03,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2265 transitions. [2020-09-25 04:31:03,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-25 04:31:03,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:03,862 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:31:03,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:31:03,863 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:03,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:03,863 INFO L82 PathProgramCache]: Analyzing trace with hash -451059465, now seen corresponding path program 1 times [2020-09-25 04:31:03,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:03,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795011147] [2020-09-25 04:31:03,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:03,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:03,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:04,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:06,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:07,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:07,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:07,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:08,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:08,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-09-25 04:31:08,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:31:08,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:31:08,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:08,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:08,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:08,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-09-25 04:31:08,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:31:08,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:08,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:08,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:08,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:08,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:08,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:08,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:31:08,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:08,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:08,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:08,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:08,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:08,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:31:09,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:09,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:09,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:09,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 04:31:09,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:09,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 04:31:09,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:09,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:09,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:09,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:09,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 04:31:09,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:31:09,205 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 65 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:09,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795011147] [2020-09-25 04:31:09,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:09,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:09,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126792321] [2020-09-25 04:31:09,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:09,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:09,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:09,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:09,208 INFO L87 Difference]: Start difference. First operand 1820 states and 2265 transitions. Second operand 5 states. [2020-09-25 04:31:11,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:11,085 INFO L93 Difference]: Finished difference Result 3801 states and 4855 transitions. [2020-09-25 04:31:11,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:11,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-09-25 04:31:11,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:11,098 INFO L225 Difference]: With dead ends: 3801 [2020-09-25 04:31:11,098 INFO L226 Difference]: Without dead ends: 2146 [2020-09-25 04:31:11,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:11,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2020-09-25 04:31:11,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 2124. [2020-09-25 04:31:11,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2124 states. [2020-09-25 04:31:11,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 2556 transitions. [2020-09-25 04:31:11,169 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 2556 transitions. Word has length 204 [2020-09-25 04:31:11,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:11,169 INFO L479 AbstractCegarLoop]: Abstraction has 2124 states and 2556 transitions. [2020-09-25 04:31:11,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:11,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 2556 transitions. [2020-09-25 04:31:11,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-09-25 04:31:11,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:11,180 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:31:11,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:31:11,180 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:11,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:11,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1701264456, now seen corresponding path program 1 times [2020-09-25 04:31:11,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:11,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89207476] [2020-09-25 04:31:11,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:11,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:11,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:11,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:11,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:12,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:12,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:13,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:13,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking...