/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/Problem14_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:39:46,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:39:46,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:39:46,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:39:46,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:39:46,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:39:46,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:39:46,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:39:46,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:39:46,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:39:46,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:39:46,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:39:46,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:39:46,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:39:46,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:39:46,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:39:46,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:39:46,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:39:46,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:39:46,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:39:46,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:39:46,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:39:46,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:39:46,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:39:46,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:39:46,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:39:46,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:39:46,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:39:46,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:39:46,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:39:46,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:39:46,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:39:46,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:39:46,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:39:46,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:39:46,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:39:46,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:39:46,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:39:46,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:39:46,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:39:46,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:39:46,656 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 05:39:46,701 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:39:46,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:39:46,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:39:46,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:39:46,704 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:39:46,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:39:46,705 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:39:46,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:39:46,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:39:46,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:39:46,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:39:46,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:39:46,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:39:46,708 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:39:46,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:39:46,708 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:39:46,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:39:46,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:39:46,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:39:46,709 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:39:46,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:39:46,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:39:46,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:39:46,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:39:46,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:39:46,711 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:39:46,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:39:46,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:39:46,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:39:46,711 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 05:39:47,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:39:47,216 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:39:47,223 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:39:47,226 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:39:47,226 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:39:47,227 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-09-25 05:39:47,317 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c7adb57d/84682b712a3c4bcbbe382bca7f60d6d3/FLAGa2396b8a1 [2020-09-25 05:39:48,037 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:39:48,038 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-09-25 05:39:48,065 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c7adb57d/84682b712a3c4bcbbe382bca7f60d6d3/FLAGa2396b8a1 [2020-09-25 05:39:48,317 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c7adb57d/84682b712a3c4bcbbe382bca7f60d6d3 [2020-09-25 05:39:48,330 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:39:48,336 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:39:48,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:48,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:39:48,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:39:48,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:48" (1/1) ... [2020-09-25 05:39:48,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3699edcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:48, skipping insertion in model container [2020-09-25 05:39:48,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:48" (1/1) ... [2020-09-25 05:39:48,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:39:48,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:39:49,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:49,081 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:39:49,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:49,279 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:39:49,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:49 WrapperNode [2020-09-25 05:39:49,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:49,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:39:49,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:39:49,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:39:49,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:49" (1/1) ... [2020-09-25 05:39:49,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:49" (1/1) ... [2020-09-25 05:39:49,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:49" (1/1) ... [2020-09-25 05:39:49,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:49" (1/1) ... [2020-09-25 05:39:49,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:49" (1/1) ... [2020-09-25 05:39:49,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:49" (1/1) ... [2020-09-25 05:39:49,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:49" (1/1) ... [2020-09-25 05:39:49,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:39:49,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:39:49,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:39:49,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:39:49,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:49" (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 05:39:49,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:39:49,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:39:49,544 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:39:49,544 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:39:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:39:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:39:49,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:39:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:39:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:39:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:39:49,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:39:51,680 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:39:51,680 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:39:51,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:51 BoogieIcfgContainer [2020-09-25 05:39:51,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:39:51,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:39:51,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:39:51,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:39:51,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:39:48" (1/3) ... [2020-09-25 05:39:51,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bdbb10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:51, skipping insertion in model container [2020-09-25 05:39:51,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:49" (2/3) ... [2020-09-25 05:39:51,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bdbb10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:51, skipping insertion in model container [2020-09-25 05:39:51,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:51" (3/3) ... [2020-09-25 05:39:51,702 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label01.c [2020-09-25 05:39:51,714 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:39:51,726 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:39:51,749 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:39:51,787 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:39:51,787 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:39:51,787 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:39:51,787 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:39:51,788 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:39:51,788 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:39:51,788 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:39:51,788 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:39:51,823 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 05:39:51,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 05:39:51,835 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:51,836 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] [2020-09-25 05:39:51,837 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:51,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:51,845 INFO L82 PathProgramCache]: Analyzing trace with hash -899775614, now seen corresponding path program 1 times [2020-09-25 05:39:51,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:51,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611004645] [2020-09-25 05:39:51,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:52,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:52,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:52,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:52,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 05:39:52,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:39:52,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 788 [2020-09-25 05:39:52,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:52,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:52,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:39:52,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:39:52,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 05:39:52,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:39:52,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:52,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:53,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:53,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:53,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:53,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 05:39:53,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:53,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:53,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:53,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:53,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:39:53,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:53,039 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 05:39:53,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611004645] [2020-09-25 05:39:53,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:39:53,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:39:53,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192773472] [2020-09-25 05:39:53,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:53,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:53,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:53,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:53,080 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-09-25 05:39:57,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:57,292 INFO L93 Difference]: Finished difference Result 1991 states and 2714 transitions. [2020-09-25 05:39:57,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:39:57,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-09-25 05:39:57,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:57,325 INFO L225 Difference]: With dead ends: 1991 [2020-09-25 05:39:57,325 INFO L226 Difference]: Without dead ends: 1250 [2020-09-25 05:39:57,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:39:57,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2020-09-25 05:39:57,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 997. [2020-09-25 05:39:57,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-25 05:39:57,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1236 transitions. [2020-09-25 05:39:57,471 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1236 transitions. Word has length 73 [2020-09-25 05:39:57,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:57,472 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1236 transitions. [2020-09-25 05:39:57,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:57,472 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1236 transitions. [2020-09-25 05:39:57,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 05:39:57,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:57,483 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:57,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:39:57,484 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:57,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:57,484 INFO L82 PathProgramCache]: Analyzing trace with hash -893839862, now seen corresponding path program 1 times [2020-09-25 05:39:57,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:57,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941089324] [2020-09-25 05:39:57,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:57,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:57,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:58,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:58,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:58,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:00,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:01,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:01,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 05:40:01,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:40:01,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3721 [2020-09-25 05:40:01,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:01,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:01,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:01,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 05:40:01,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 05:40:01,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:01,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:01,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:01,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:01,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:01,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:01,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:40:01,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:01,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:01,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:01,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:40:01,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:01,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:01,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:01,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 05:40:01,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:01,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 05:40:01,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:01,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:01,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:01,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:01,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 05:40:01,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:01,733 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:01,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941089324] [2020-09-25 05:40:01,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:01,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:01,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651407959] [2020-09-25 05:40:01,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:01,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:01,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:01,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:01,740 INFO L87 Difference]: Start difference. First operand 997 states and 1236 transitions. Second operand 5 states. [2020-09-25 05:40:04,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:04,747 INFO L93 Difference]: Finished difference Result 2592 states and 3339 transitions. [2020-09-25 05:40:04,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:04,750 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-25 05:40:04,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:04,761 INFO L225 Difference]: With dead ends: 2592 [2020-09-25 05:40:04,761 INFO L226 Difference]: Without dead ends: 1610 [2020-09-25 05:40:04,766 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 05:40:04,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2020-09-25 05:40:04,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1570. [2020-09-25 05:40:04,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-09-25 05:40:04,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 1957 transitions. [2020-09-25 05:40:04,822 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 1957 transitions. Word has length 160 [2020-09-25 05:40:04,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:04,824 INFO L479 AbstractCegarLoop]: Abstraction has 1570 states and 1957 transitions. [2020-09-25 05:40:04,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:04,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 1957 transitions. [2020-09-25 05:40:04,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 05:40:04,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:04,829 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:04,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:40:04,830 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:04,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:04,830 INFO L82 PathProgramCache]: Analyzing trace with hash -829752670, now seen corresponding path program 1 times [2020-09-25 05:40:04,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:04,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252246185] [2020-09-25 05:40:04,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:04,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:04,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:05,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:06,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:07,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:07,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:07,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:09,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:09,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 05:40:09,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:40:09,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 05:40:09,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:09,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:09,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:09,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-09-25 05:40:09,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 05:40:09,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:10,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:10,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:10,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:10,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:10,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:10,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:40:10,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:10,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:10,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:10,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:10,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:10,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:10,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:10,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:10,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:10,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 05:40:10,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:10,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 05:40:10,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:10,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:10,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:10,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:10,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 05:40:10,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:10,245 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:10,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252246185] [2020-09-25 05:40:10,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:10,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:10,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781713672] [2020-09-25 05:40:10,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:10,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:10,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:10,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:10,251 INFO L87 Difference]: Start difference. First operand 1570 states and 1957 transitions. Second operand 5 states. [2020-09-25 05:40:12,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:12,887 INFO L93 Difference]: Finished difference Result 2173 states and 2836 transitions. [2020-09-25 05:40:12,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:12,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-09-25 05:40:12,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:12,908 INFO L225 Difference]: With dead ends: 2173 [2020-09-25 05:40:12,909 INFO L226 Difference]: Without dead ends: 2171 [2020-09-25 05:40:12,911 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 05:40:12,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2020-09-25 05:40:13,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 1763. [2020-09-25 05:40:13,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2020-09-25 05:40:13,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2279 transitions. [2020-09-25 05:40:13,031 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2279 transitions. Word has length 169 [2020-09-25 05:40:13,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:13,036 INFO L479 AbstractCegarLoop]: Abstraction has 1763 states and 2279 transitions. [2020-09-25 05:40:13,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:13,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2279 transitions. [2020-09-25 05:40:13,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 05:40:13,041 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:13,041 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:13,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:40:13,042 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:13,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:13,042 INFO L82 PathProgramCache]: Analyzing trace with hash -2088226614, now seen corresponding path program 1 times [2020-09-25 05:40:13,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:13,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105073239] [2020-09-25 05:40:13,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:13,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:13,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:13,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:15,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:15,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:16,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:18,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:18,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 05:40:18,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:40:18,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4931 [2020-09-25 05:40:18,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:18,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:18,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:18,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-09-25 05:40:18,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 05:40:18,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:18,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:18,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:18,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:18,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:18,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:18,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:40:18,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:18,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:18,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:18,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:18,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:18,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:18,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:18,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:18,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:18,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 05:40:18,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:18,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 05:40:18,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:18,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:18,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 05:40:18,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:18,305 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:18,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105073239] [2020-09-25 05:40:18,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:18,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:18,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881430849] [2020-09-25 05:40:18,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:18,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:18,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:18,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:18,311 INFO L87 Difference]: Start difference. First operand 1763 states and 2279 transitions. Second operand 5 states. [2020-09-25 05:40:21,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:21,017 INFO L93 Difference]: Finished difference Result 3903 states and 5155 transitions. [2020-09-25 05:40:21,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:21,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-09-25 05:40:21,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:21,030 INFO L225 Difference]: With dead ends: 3903 [2020-09-25 05:40:21,030 INFO L226 Difference]: Without dead ends: 1746 [2020-09-25 05:40:21,037 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 05:40:21,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2020-09-25 05:40:21,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1736. [2020-09-25 05:40:21,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1736 states. [2020-09-25 05:40:21,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 2217 transitions. [2020-09-25 05:40:21,082 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 2217 transitions. Word has length 175 [2020-09-25 05:40:21,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:21,082 INFO L479 AbstractCegarLoop]: Abstraction has 1736 states and 2217 transitions. [2020-09-25 05:40:21,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:21,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 2217 transitions. [2020-09-25 05:40:21,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 05:40:21,086 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:21,086 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:21,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:40:21,086 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:21,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:21,087 INFO L82 PathProgramCache]: Analyzing trace with hash 2120468014, now seen corresponding path program 1 times [2020-09-25 05:40:21,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:21,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415589971] [2020-09-25 05:40:21,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:21,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:21,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:21,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:22,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:24,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:24,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 05:40:24,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:40:24,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3546 [2020-09-25 05:40:24,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:24,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:24,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:24,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-09-25 05:40:24,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 05:40:24,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:24,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:24,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:24,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:24,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:24,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:24,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:40:24,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:24,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:24,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:24,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:24,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:24,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:24,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:24,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:24,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:24,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 05:40:24,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:24,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 05:40:24,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:24,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:24,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:24,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:24,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 05:40:24,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:24,981 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:24,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415589971] [2020-09-25 05:40:24,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:24,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:24,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731899718] [2020-09-25 05:40:24,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:24,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:24,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:24,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:24,985 INFO L87 Difference]: Start difference. First operand 1736 states and 2217 transitions. Second operand 5 states. [2020-09-25 05:40:28,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:28,020 INFO L93 Difference]: Finished difference Result 4250 states and 5643 transitions. [2020-09-25 05:40:28,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:28,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 05:40:28,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:28,036 INFO L225 Difference]: With dead ends: 4250 [2020-09-25 05:40:28,036 INFO L226 Difference]: Without dead ends: 2529 [2020-09-25 05:40:28,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:40:28,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2529 states. [2020-09-25 05:40:28,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2529 to 2312. [2020-09-25 05:40:28,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2312 states. [2020-09-25 05:40:28,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 2948 transitions. [2020-09-25 05:40:28,108 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 2948 transitions. Word has length 181 [2020-09-25 05:40:28,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:28,109 INFO L479 AbstractCegarLoop]: Abstraction has 2312 states and 2948 transitions. [2020-09-25 05:40:28,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:28,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 2948 transitions. [2020-09-25 05:40:28,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 05:40:28,114 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:28,114 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:28,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:40:28,115 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:28,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:28,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1805085330, now seen corresponding path program 1 times [2020-09-25 05:40:28,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:28,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310519772] [2020-09-25 05:40:28,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:28,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:28,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:28,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:30,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:31,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:31,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:32,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:32,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:33,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:33,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 05:40:33,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:40:33,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:40:33,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:33,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:33,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-09-25 05:40:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 05:40:33,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:33,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:33,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:33,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:33,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:33,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:33,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:40:33,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:33,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:33,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:33,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:33,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:33,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:33,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:33,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:33,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:33,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 05:40:33,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:33,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 05:40:33,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:33,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:33,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:33,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:33,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 05:40:33,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:33,579 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:33,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310519772] [2020-09-25 05:40:33,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:33,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:33,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564923379] [2020-09-25 05:40:33,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:33,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:33,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:33,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:33,583 INFO L87 Difference]: Start difference. First operand 2312 states and 2948 transitions. Second operand 5 states.