/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/Problem02_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:36:56,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:36:56,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:36:56,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:36:56,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:36:56,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:36:56,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:36:56,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:36:56,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:36:56,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:36:56,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:36:56,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:36:56,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:36:56,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:36:56,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:36:56,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:36:56,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:36:56,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:36:56,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:36:56,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:36:56,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:36:56,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:36:56,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:36:56,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:36:56,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:36:56,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:36:56,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:36:56,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:36:56,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:36:56,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:36:56,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:36:56,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:36:56,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:36:56,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:36:56,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:36:56,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:36:56,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:36:56,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:36:56,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:36:56,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:36:56,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:36:56,340 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 05:36:56,388 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:36:56,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:36:56,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:36:56,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:36:56,392 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:36:56,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:36:56,393 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:36:56,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:36:56,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:36:56,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:36:56,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:36:56,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:36:56,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:36:56,395 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:36:56,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:36:56,395 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:36:56,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:36:56,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:36:56,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:36:56,396 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:36:56,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:36:56,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:36:56,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:36:56,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:36:56,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:36:56,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:36:56,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:36:56,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:36:56,398 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:36:56,398 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 05:36:56,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:36:56,891 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:36:56,895 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:36:56,897 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:36:56,898 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:36:56,899 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label46.c [2020-09-25 05:36:56,980 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a32e9025b/951d66e75e2a48af86d3b1b779b06c08/FLAG612f315f8 [2020-09-25 05:36:57,679 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:36:57,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label46.c [2020-09-25 05:36:57,693 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a32e9025b/951d66e75e2a48af86d3b1b779b06c08/FLAG612f315f8 [2020-09-25 05:36:57,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a32e9025b/951d66e75e2a48af86d3b1b779b06c08 [2020-09-25 05:36:57,869 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:36:57,876 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:36:57,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:36:57,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:36:57,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:36:57,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:36:57" (1/1) ... [2020-09-25 05:36:57,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1058f97b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:57, skipping insertion in model container [2020-09-25 05:36:57,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:36:57" (1/1) ... [2020-09-25 05:36:57,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:36:57,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:36:58,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:36:58,472 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:36:58,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:36:58,727 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:36:58,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:58 WrapperNode [2020-09-25 05:36:58,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:36:58,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:36:58,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:36:58,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:36:58,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:58" (1/1) ... [2020-09-25 05:36:58,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:58" (1/1) ... [2020-09-25 05:36:58,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:58" (1/1) ... [2020-09-25 05:36:58,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:58" (1/1) ... [2020-09-25 05:36:58,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:58" (1/1) ... [2020-09-25 05:36:58,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:58" (1/1) ... [2020-09-25 05:36:58,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:58" (1/1) ... [2020-09-25 05:36:58,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:36:58,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:36:58,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:36:58,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:36:58,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:58" (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 05:36:58,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:36:58,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:36:58,925 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:36:58,926 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:36:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:36:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:36:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:36:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:36:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:36:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:36:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:37:00,321 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:37:00,321 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:37:00,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:37:00 BoogieIcfgContainer [2020-09-25 05:37:00,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:37:00,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:37:00,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:37:00,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:37:00,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:36:57" (1/3) ... [2020-09-25 05:37:00,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336222d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:37:00, skipping insertion in model container [2020-09-25 05:37:00,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:58" (2/3) ... [2020-09-25 05:37:00,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336222d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:37:00, skipping insertion in model container [2020-09-25 05:37:00,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:37:00" (3/3) ... [2020-09-25 05:37:00,343 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label46.c [2020-09-25 05:37:00,358 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:37:00,371 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:37:00,398 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:37:00,438 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:37:00,438 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:37:00,439 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:37:00,439 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:37:00,439 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:37:00,439 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:37:00,439 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:37:00,440 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:37:00,477 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 05:37:00,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 05:37:00,499 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:00,501 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] [2020-09-25 05:37:00,502 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:00,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:00,512 INFO L82 PathProgramCache]: Analyzing trace with hash -87322735, now seen corresponding path program 1 times [2020-09-25 05:37:00,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:00,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843007766] [2020-09-25 05:37:00,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:00,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:01,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:01,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:02,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:03,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:03,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:04,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:04,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:05,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:05,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 05:37:05,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:37:05,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 05:37:05,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:05,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:05,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:37:05,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:37:05,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 05:37:05,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:37:06,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:06,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:06,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:06,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:06,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:06,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 05:37:06,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:06,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:06,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:06,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:06,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:37:06,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:06,185 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 05:37:06,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843007766] [2020-09-25 05:37:06,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:37:06,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:37:06,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483884776] [2020-09-25 05:37:06,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:06,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:06,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:06,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:06,224 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 05:37:08,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:08,753 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 05:37:08,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:37:08,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-09-25 05:37:08,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:08,782 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 05:37:08,783 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 05:37:08,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:37:08,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 05:37:08,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 05:37:08,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 05:37:08,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 05:37:08,912 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 138 [2020-09-25 05:37:08,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:08,913 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 05:37:08,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:37:08,914 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 05:37:08,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 05:37:08,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:08,921 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] [2020-09-25 05:37:08,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:37:08,922 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:08,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:08,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1674375397, now seen corresponding path program 1 times [2020-09-25 05:37:08,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:08,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892661855] [2020-09-25 05:37:08,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:09,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:09,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:09,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:09,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:09,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:11,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:12,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:12,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:13,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:13,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:13,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 05:37:13,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:37:13,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 05:37:13,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:13,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:13,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:13,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:37:13,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 05:37:13,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:14,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:14,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:14,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:14,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:14,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:14,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 05:37:14,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:14,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:14,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:14,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:14,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:14,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 05:37:14,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:14,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:14,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:14,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:37:14,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:14,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:37:14,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:14,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:14,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:14,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:14,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:37:14,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:14,262 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 05:37:14,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892661855] [2020-09-25 05:37:14,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:14,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:37:14,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745497976] [2020-09-25 05:37:14,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:14,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:14,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:14,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:14,268 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 05:37:16,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:16,529 INFO L93 Difference]: Finished difference Result 1806 states and 2276 transitions. [2020-09-25 05:37:16,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:37:16,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 05:37:16,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:16,547 INFO L225 Difference]: With dead ends: 1806 [2020-09-25 05:37:16,548 INFO L226 Difference]: Without dead ends: 1095 [2020-09-25 05:37:16,551 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 05:37:16,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2020-09-25 05:37:16,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1039. [2020-09-25 05:37:16,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-09-25 05:37:16,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1246 transitions. [2020-09-25 05:37:16,622 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1246 transitions. Word has length 156 [2020-09-25 05:37:16,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:16,627 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1246 transitions. [2020-09-25 05:37:16,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:37:16,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1246 transitions. [2020-09-25 05:37:16,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 05:37:16,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:16,635 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:37:16,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:37:16,635 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:16,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:16,636 INFO L82 PathProgramCache]: Analyzing trace with hash -873577392, now seen corresponding path program 1 times [2020-09-25 05:37:16,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:16,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963998159] [2020-09-25 05:37:16,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:16,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:16,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:17,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:17,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:17,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:18,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:19,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:21,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:21,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 05:37:21,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:37:21,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 05:37:21,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:21,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:21,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:21,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 05:37:21,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 05:37:21,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:21,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:21,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:21,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:21,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:21,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:21,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:37:21,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:21,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:21,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:21,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:21,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:21,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:21,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:21,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:21,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:21,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:37:21,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:21,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 05:37:21,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:21,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:21,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:21,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:21,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:37:21,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:37:21,974 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:21,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963998159] [2020-09-25 05:37:21,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:21,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:37:21,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424329162] [2020-09-25 05:37:21,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:21,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:21,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:21,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:21,979 INFO L87 Difference]: Start difference. First operand 1039 states and 1246 transitions. Second operand 5 states. [2020-09-25 05:37:24,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:24,209 INFO L93 Difference]: Finished difference Result 2705 states and 3410 transitions. [2020-09-25 05:37:24,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:37:24,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-09-25 05:37:24,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:24,224 INFO L225 Difference]: With dead ends: 2705 [2020-09-25 05:37:24,224 INFO L226 Difference]: Without dead ends: 1688 [2020-09-25 05:37:24,228 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 05:37:24,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2020-09-25 05:37:24,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1648. [2020-09-25 05:37:24,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1648 states. [2020-09-25 05:37:24,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 1962 transitions. [2020-09-25 05:37:24,303 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 1962 transitions. Word has length 162 [2020-09-25 05:37:24,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:24,305 INFO L479 AbstractCegarLoop]: Abstraction has 1648 states and 1962 transitions. [2020-09-25 05:37:24,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:37:24,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 1962 transitions. [2020-09-25 05:37:24,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 05:37:24,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:24,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:24,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:37:24,316 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:24,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:24,317 INFO L82 PathProgramCache]: Analyzing trace with hash -997660219, now seen corresponding path program 1 times [2020-09-25 05:37:24,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:24,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144733566] [2020-09-25 05:37:24,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:24,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:24,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:24,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:24,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:25,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:25,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:26,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:29,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:29,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 05:37:29,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:37:29,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 05:37:29,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:29,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:29,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:29,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 05:37:29,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 05:37:29,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:37:29,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:29,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:29,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:29,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:29,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:29,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:37:29,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:29,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:29,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:29,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:29,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:29,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:29,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:29,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 05:37:29,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:29,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 05:37:29,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:29,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:29,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:29,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:29,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 05:37:29,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:29,831 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:29,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144733566] [2020-09-25 05:37:29,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:29,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:37:29,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055229141] [2020-09-25 05:37:29,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:29,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:29,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:29,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:29,836 INFO L87 Difference]: Start difference. First operand 1648 states and 1962 transitions. Second operand 5 states. [2020-09-25 05:37:32,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:32,129 INFO L93 Difference]: Finished difference Result 4518 states and 5602 transitions. [2020-09-25 05:37:32,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:37:32,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-09-25 05:37:32,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:32,146 INFO L225 Difference]: With dead ends: 4518 [2020-09-25 05:37:32,146 INFO L226 Difference]: Without dead ends: 2892 [2020-09-25 05:37:32,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 05:37:32,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2020-09-25 05:37:32,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2726. [2020-09-25 05:37:32,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2726 states. [2020-09-25 05:37:32,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2726 states to 2726 states and 3280 transitions. [2020-09-25 05:37:32,235 INFO L78 Accepts]: Start accepts. Automaton has 2726 states and 3280 transitions. Word has length 173 [2020-09-25 05:37:32,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:32,235 INFO L479 AbstractCegarLoop]: Abstraction has 2726 states and 3280 transitions. [2020-09-25 05:37:32,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:37:32,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2726 states and 3280 transitions. [2020-09-25 05:37:32,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 05:37:32,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:32,245 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 05:37:32,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:37:32,246 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:32,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:32,246 INFO L82 PathProgramCache]: Analyzing trace with hash 911650778, now seen corresponding path program 1 times [2020-09-25 05:37:32,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:32,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055333383] [2020-09-25 05:37:32,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:32,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:32,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:32,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:37,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:37,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 05:37:37,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:37:37,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:37:37,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:37,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:37,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:37,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 05:37:37,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 05:37:37,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:37:37,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:37,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:37,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:37,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:37,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:37,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:37:37,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:37,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:37,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:37,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:37,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:37,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:37,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:37,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:37,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:37,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:37:37,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:37,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:37:37,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:37,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:37,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:37,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:37,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 05:37:37,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:37:37,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 05:37:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:37,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:37,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:37,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 05:37:37,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:37,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 05:37:37,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:37,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:37,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:37,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:37:37,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:37:37,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:37,524 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:37:37,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055333383] [2020-09-25 05:37:37,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:37,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:37:37,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047646652] [2020-09-25 05:37:37,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:37:37,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:37,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:37:37,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:37:37,526 INFO L87 Difference]: Start difference. First operand 2726 states and 3280 transitions. Second operand 7 states. [2020-09-25 05:37:40,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:40,574 INFO L93 Difference]: Finished difference Result 6124 states and 7542 transitions. [2020-09-25 05:37:40,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:37:40,575 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-25 05:37:40,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:40,592 INFO L225 Difference]: With dead ends: 6124 [2020-09-25 05:37:40,592 INFO L226 Difference]: Without dead ends: 3081 [2020-09-25 05:37:40,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 05:37:40,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3081 states. [2020-09-25 05:37:40,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3081 to 2727. [2020-09-25 05:37:40,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-09-25 05:37:40,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3160 transitions. [2020-09-25 05:37:40,688 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3160 transitions. Word has length 181 [2020-09-25 05:37:40,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:40,689 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3160 transitions. [2020-09-25 05:37:40,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:37:40,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3160 transitions. [2020-09-25 05:37:40,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 05:37:40,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:40,700 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, 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] [2020-09-25 05:37:40,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:37:40,700 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:40,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:40,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1324494398, now seen corresponding path program 1 times [2020-09-25 05:37:40,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:40,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713470031] [2020-09-25 05:37:40,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:40,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:40,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:40,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:41,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:43,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:44,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:45,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking...