/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:42:56,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:42:56,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:42:56,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:42:56,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:42:56,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:42:56,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:42:56,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:42:56,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:42:56,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:42:56,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:42:56,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:42:56,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:42:56,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:42:56,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:42:56,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:42:56,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:42:56,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:42:56,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:42:56,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:42:56,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:42:56,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:42:56,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:42:56,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:42:56,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:42:56,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:42:56,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:42:56,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:42:56,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:42:56,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:42:56,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:42:56,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:42:56,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:42:56,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:42:56,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:42:56,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:42:56,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:42:56,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:42:56,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:42:56,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:42:56,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:42:56,561 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 14:42:56,588 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:42:56,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:42:56,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:42:56,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:42:56,590 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:42:56,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:42:56,591 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:42:56,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:42:56,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:42:56,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:42:56,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:42:56,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:42:56,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:42:56,592 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:42:56,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:42:56,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:42:56,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:42:56,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:42:56,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:42:56,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:42:56,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:42:56,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:42:56,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:42:56,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:42:56,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:42:56,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:42:56,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:42:56,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:42:56,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:42:56,596 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:42:57,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:42:57,192 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:42:57,197 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:42:57,199 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:42:57,200 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:42:57,202 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label51.c [2020-09-25 14:42:57,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae16bf6e4/fbbe573240b34d71876e0b1c5691de07/FLAGb46f60c6f [2020-09-25 14:42:57,942 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:42:57,943 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label51.c [2020-09-25 14:42:57,962 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae16bf6e4/fbbe573240b34d71876e0b1c5691de07/FLAGb46f60c6f [2020-09-25 14:42:58,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae16bf6e4/fbbe573240b34d71876e0b1c5691de07 [2020-09-25 14:42:58,180 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:42:58,186 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:42:58,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:42:58,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:42:58,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:42:58,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:42:58" (1/1) ... [2020-09-25 14:42:58,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cbac012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:58, skipping insertion in model container [2020-09-25 14:42:58,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:42:58" (1/1) ... [2020-09-25 14:42:58,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:42:58,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:42:58,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:42:58,843 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:42:59,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:42:59,108 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:42:59,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:59 WrapperNode [2020-09-25 14:42:59,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:42:59,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:42:59,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:42:59,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:42:59,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:59" (1/1) ... [2020-09-25 14:42:59,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:59" (1/1) ... [2020-09-25 14:42:59,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:59" (1/1) ... [2020-09-25 14:42:59,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:59" (1/1) ... [2020-09-25 14:42:59,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:59" (1/1) ... [2020-09-25 14:42:59,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:59" (1/1) ... [2020-09-25 14:42:59,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:59" (1/1) ... [2020-09-25 14:42:59,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:42:59,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:42:59,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:42:59,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:42:59,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:59" (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 14:42:59,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:42:59,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:42:59,331 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:42:59,331 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:42:59,332 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:42:59,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:42:59,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:42:59,332 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:42:59,332 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:42:59,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:42:59,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:43:00,927 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:43:00,928 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:43:00,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:00 BoogieIcfgContainer [2020-09-25 14:43:00,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:43:00,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:43:00,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:43:00,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:43:00,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:42:58" (1/3) ... [2020-09-25 14:43:00,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60447c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:00, skipping insertion in model container [2020-09-25 14:43:00,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:59" (2/3) ... [2020-09-25 14:43:00,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60447c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:00, skipping insertion in model container [2020-09-25 14:43:00,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:00" (3/3) ... [2020-09-25 14:43:00,953 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label51.c [2020-09-25 14:43:00,969 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:43:00,981 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:43:01,008 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:43:01,047 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:43:01,048 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:43:01,048 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:43:01,048 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:43:01,048 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:43:01,048 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:43:01,048 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:43:01,049 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:43:01,085 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:43:01,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 14:43:01,099 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:01,100 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] [2020-09-25 14:43:01,101 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:01,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:01,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1905842433, now seen corresponding path program 1 times [2020-09-25 14:43:01,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:01,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982380634] [2020-09-25 14:43:01,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:01,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:01,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:01,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:02,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:02,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 14:43:02,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:43:02,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1216 [2020-09-25 14:43:02,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:02,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:02,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:02,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:43:02,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 14:43:02,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:43:02,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:02,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:02,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:02,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:02,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:02,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 14:43:02,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:02,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:02,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:43:02,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:02,780 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 14:43:02,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982380634] [2020-09-25 14:43:02,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:02,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:43:02,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125302493] [2020-09-25 14:43:02,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:43:02,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:02,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:43:02,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:43:02,817 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 14:43:06,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:06,140 INFO L93 Difference]: Finished difference Result 1358 states and 1918 transitions. [2020-09-25 14:43:06,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:43:06,143 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-09-25 14:43:06,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:06,173 INFO L225 Difference]: With dead ends: 1358 [2020-09-25 14:43:06,173 INFO L226 Difference]: Without dead ends: 812 [2020-09-25 14:43:06,194 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 14:43:06,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-25 14:43:06,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 738. [2020-09-25 14:43:06,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-09-25 14:43:06,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 928 transitions. [2020-09-25 14:43:06,341 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 928 transitions. Word has length 69 [2020-09-25 14:43:06,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:06,342 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 928 transitions. [2020-09-25 14:43:06,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:43:06,342 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 928 transitions. [2020-09-25 14:43:06,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 14:43:06,361 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:06,361 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:06,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:43:06,365 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:06,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:06,366 INFO L82 PathProgramCache]: Analyzing trace with hash -966101360, now seen corresponding path program 1 times [2020-09-25 14:43:06,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:06,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207295053] [2020-09-25 14:43:06,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:06,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:06,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:06,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:07,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:07,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:09,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:09,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 14:43:09,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:43:09,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3136 [2020-09-25 14:43:09,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:09,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:43:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:43:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 14:43:09,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:09,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:09,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:09,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:09,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:09,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:09,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:43:09,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:09,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:09,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:09,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:09,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:43:09,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:09,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:09,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:09,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:09,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:09,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:43:09,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:43:09,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 14:43:09,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:09,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:09,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:09,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:09,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:43:09,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:09,982 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 14:43:09,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207295053] [2020-09-25 14:43:09,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:09,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:43:09,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898077863] [2020-09-25 14:43:09,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:43:09,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:09,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:43:09,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:43:09,987 INFO L87 Difference]: Start difference. First operand 738 states and 928 transitions. Second operand 6 states. [2020-09-25 14:43:12,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:12,307 INFO L93 Difference]: Finished difference Result 2066 states and 2794 transitions. [2020-09-25 14:43:12,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:43:12,308 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2020-09-25 14:43:12,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:12,319 INFO L225 Difference]: With dead ends: 2066 [2020-09-25 14:43:12,319 INFO L226 Difference]: Without dead ends: 1343 [2020-09-25 14:43:12,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:43:12,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2020-09-25 14:43:12,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1193. [2020-09-25 14:43:12,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1193 states. [2020-09-25 14:43:12,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1577 transitions. [2020-09-25 14:43:12,391 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1577 transitions. Word has length 148 [2020-09-25 14:43:12,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:12,393 INFO L479 AbstractCegarLoop]: Abstraction has 1193 states and 1577 transitions. [2020-09-25 14:43:12,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:43:12,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1577 transitions. [2020-09-25 14:43:12,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-09-25 14:43:12,410 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:12,411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:12,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:43:12,411 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:12,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:12,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1018487757, now seen corresponding path program 1 times [2020-09-25 14:43:12,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:12,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573132932] [2020-09-25 14:43:12,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:12,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:12,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:12,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:13,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:15,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:17,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:17,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-25 14:43:17,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:43:17,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 14:43:17,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:17,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:17,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:17,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:43:17,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 14:43:17,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:17,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:17,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:17,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:17,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:17,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:17,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:43:17,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:17,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:17,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:17,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:17,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:43:17,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:17,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:17,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:17,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:17,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 14:43:17,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:17,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-09-25 14:43:17,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:17,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:17,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:17,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:17,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 14:43:17,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:18,092 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:18,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573132932] [2020-09-25 14:43:18,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:18,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:43:18,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101192294] [2020-09-25 14:43:18,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:18,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:18,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:18,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:18,097 INFO L87 Difference]: Start difference. First operand 1193 states and 1577 transitions. Second operand 7 states. [2020-09-25 14:43:20,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:20,484 INFO L93 Difference]: Finished difference Result 3072 states and 4318 transitions. [2020-09-25 14:43:20,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:43:20,484 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-09-25 14:43:20,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:20,501 INFO L225 Difference]: With dead ends: 3072 [2020-09-25 14:43:20,501 INFO L226 Difference]: Without dead ends: 2044 [2020-09-25 14:43:20,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:43:20,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2020-09-25 14:43:20,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 1820. [2020-09-25 14:43:20,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1820 states. [2020-09-25 14:43:20,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2291 transitions. [2020-09-25 14:43:20,585 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2291 transitions. Word has length 215 [2020-09-25 14:43:20,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:20,586 INFO L479 AbstractCegarLoop]: Abstraction has 1820 states and 2291 transitions. [2020-09-25 14:43:20,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:20,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2291 transitions. [2020-09-25 14:43:20,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-25 14:43:20,606 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:20,606 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:43:20,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:43:20,607 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:20,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:20,607 INFO L82 PathProgramCache]: Analyzing trace with hash -2020435647, now seen corresponding path program 1 times [2020-09-25 14:43:20,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:20,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956441444] [2020-09-25 14:43:20,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:20,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:20,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:21,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:21,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:24,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:24,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:24,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:25,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:25,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-25 14:43:25,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:43:25,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:43:25,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:25,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:25,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:43:25,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:43:25,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 14:43:25,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:25,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:25,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:25,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:25,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:25,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:25,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:43:25,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:25,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:25,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:25,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:25,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:43:25,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:25,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:25,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:25,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:25,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:43:25,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:25,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 14:43:25,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:25,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:25,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:43:25,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:25,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:43:25,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:26,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:43:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:26,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:26,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:26,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:43:26,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:26,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 14:43:26,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:26,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:26,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:26,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:26,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:43:26,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:26,504 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 172 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:43:26,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956441444] [2020-09-25 14:43:26,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:26,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:43:26,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804790147] [2020-09-25 14:43:26,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:43:26,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:26,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:43:26,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:43:26,508 INFO L87 Difference]: Start difference. First operand 1820 states and 2291 transitions. Second operand 10 states. [2020-09-25 14:43:30,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:30,049 INFO L93 Difference]: Finished difference Result 4229 states and 6017 transitions. [2020-09-25 14:43:30,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 14:43:30,049 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 237 [2020-09-25 14:43:30,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:30,073 INFO L225 Difference]: With dead ends: 4229 [2020-09-25 14:43:30,073 INFO L226 Difference]: Without dead ends: 2574 [2020-09-25 14:43:30,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2020-09-25 14:43:30,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2020-09-25 14:43:30,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 2346. [2020-09-25 14:43:30,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2346 states. [2020-09-25 14:43:30,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 2966 transitions. [2020-09-25 14:43:30,198 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 2966 transitions. Word has length 237 [2020-09-25 14:43:30,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:30,199 INFO L479 AbstractCegarLoop]: Abstraction has 2346 states and 2966 transitions. [2020-09-25 14:43:30,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:43:30,199 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 2966 transitions. [2020-09-25 14:43:30,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 14:43:30,205 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:30,205 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-09-25 14:43:30,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:43:30,206 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:30,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:30,206 INFO L82 PathProgramCache]: Analyzing trace with hash 878642836, now seen corresponding path program 1 times [2020-09-25 14:43:30,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:30,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129019911] [2020-09-25 14:43:30,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:30,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:30,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:30,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:30,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:31,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:31,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:32,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:33,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:33,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:34,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:34,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:35,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:35,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-25 14:43:35,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 14:43:35,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 14:43:35,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:35,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:35,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:43:35,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 14:43:35,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 14:43:35,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:43:35,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:35,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:35,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:35,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:35,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:35,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:43:35,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:35,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:35,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:43:35,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:35,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:43:35,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:35,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:35,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:35,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:35,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:43:35,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:35,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 14:43:35,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:35,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:35,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:35,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:35,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:43:35,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:35,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 14:43:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:35,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:35,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:36,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:36,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 14:43:36,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:43:36,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-09-25 14:43:36,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:36,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:36,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:43:36,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:36,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 14:43:36,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:43:36,326 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 114 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-25 14:43:36,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129019911] [2020-09-25 14:43:36,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:36,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:43:36,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694113265] [2020-09-25 14:43:36,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:43:36,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:36,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:43:36,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:43:36,329 INFO L87 Difference]: Start difference. First operand 2346 states and 2966 transitions. Second operand 9 states. [2020-09-25 14:43:41,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:41,267 INFO L93 Difference]: Finished difference Result 5491 states and 7296 transitions. [2020-09-25 14:43:41,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:43:41,273 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 241 [2020-09-25 14:43:41,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:41,290 INFO L225 Difference]: With dead ends: 5491 [2020-09-25 14:43:41,291 INFO L226 Difference]: Without dead ends: 3290 [2020-09-25 14:43:41,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:43:41,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3290 states. [2020-09-25 14:43:41,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3290 to 2951. [2020-09-25 14:43:41,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2951 states. [2020-09-25 14:43:41,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2951 states to 2951 states and 3703 transitions. [2020-09-25 14:43:41,387 INFO L78 Accepts]: Start accepts. Automaton has 2951 states and 3703 transitions. Word has length 241 [2020-09-25 14:43:41,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:41,388 INFO L479 AbstractCegarLoop]: Abstraction has 2951 states and 3703 transitions. [2020-09-25 14:43:41,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:43:41,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2951 states and 3703 transitions. [2020-09-25 14:43:41,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-09-25 14:43:41,397 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:41,398 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:43:41,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:43:41,398 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:41,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:41,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1521249918, now seen corresponding path program 1 times [2020-09-25 14:43:41,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:41,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203439932] [2020-09-25 14:43:41,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:41,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:41,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:42,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:42,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:43,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:44,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:44,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking...