/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:32:36,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:32:36,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:32:36,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:32:36,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:32:36,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:32:36,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:32:36,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:32:36,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:32:36,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:32:36,197 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:32:36,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:32:36,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:32:36,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:32:36,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:32:36,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:32:36,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:32:36,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:32:36,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:32:36,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:32:36,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:32:36,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:32:36,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:32:36,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:32:36,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:32:36,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:32:36,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:32:36,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:32:36,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:32:36,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:32:36,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:32:36,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:32:36,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:32:36,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:32:36,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:32:36,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:32:36,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:32:36,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:32:36,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:32:36,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:32:36,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:32:36,266 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 13:32:36,315 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:32:36,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:32:36,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:32:36,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:32:36,318 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:32:36,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:32:36,318 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:32:36,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:32:36,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:32:36,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:32:36,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:32:36,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:32:36,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:32:36,321 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:32:36,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:32:36,322 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:32:36,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:32:36,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:32:36,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:32:36,323 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:32:36,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:32:36,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:32:36,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:32:36,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:32:36,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:32:36,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:32:36,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:32:36,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:32:36,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:32:36,325 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=0.4;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:32:36,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:32:36,835 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:32:36,839 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:32:36,841 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:32:36,842 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:32:36,843 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label47.c [2020-09-25 13:32:36,919 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f39c97bf5/920f251ffd51400fbdaf8be43a9d28fb/FLAGb63b6e0b3 [2020-09-25 13:32:37,624 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:32:37,625 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label47.c [2020-09-25 13:32:37,637 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f39c97bf5/920f251ffd51400fbdaf8be43a9d28fb/FLAGb63b6e0b3 [2020-09-25 13:32:37,824 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f39c97bf5/920f251ffd51400fbdaf8be43a9d28fb [2020-09-25 13:32:37,840 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:32:37,846 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:32:37,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:32:37,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:32:37,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:32:37,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:32:37" (1/1) ... [2020-09-25 13:32:37,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194bd3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:37, skipping insertion in model container [2020-09-25 13:32:37,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:32:37" (1/1) ... [2020-09-25 13:32:37,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:32:37,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:32:38,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:32:38,355 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:32:38,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:32:38,586 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:32:38,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:38 WrapperNode [2020-09-25 13:32:38,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:32:38,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:32:38,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:32:38,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:32:38,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:38" (1/1) ... [2020-09-25 13:32:38,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:38" (1/1) ... [2020-09-25 13:32:38,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:38" (1/1) ... [2020-09-25 13:32:38,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:38" (1/1) ... [2020-09-25 13:32:38,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:38" (1/1) ... [2020-09-25 13:32:38,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:38" (1/1) ... [2020-09-25 13:32:38,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:38" (1/1) ... [2020-09-25 13:32:38,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:32:38,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:32:38,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:32:38,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:32:38,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:38" (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 13:32:38,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:32:38,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:32:38,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:32:38,780 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:32:38,780 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:32:38,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:32:38,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:32:38,781 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:32:38,781 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:32:38,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:32:38,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:32:40,191 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:32:40,191 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:32:40,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:32:40 BoogieIcfgContainer [2020-09-25 13:32:40,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:32:40,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:32:40,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:32:40,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:32:40,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:32:37" (1/3) ... [2020-09-25 13:32:40,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a66a94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:32:40, skipping insertion in model container [2020-09-25 13:32:40,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:38" (2/3) ... [2020-09-25 13:32:40,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a66a94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:32:40, skipping insertion in model container [2020-09-25 13:32:40,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:32:40" (3/3) ... [2020-09-25 13:32:40,221 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label47.c [2020-09-25 13:32:40,234 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:32:40,255 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:32:40,278 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:32:40,327 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:32:40,327 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:32:40,327 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:32:40,327 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:32:40,327 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:32:40,328 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:32:40,328 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:32:40,328 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:32:40,361 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:32:40,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 13:32:40,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:40,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:40,385 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:40,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:40,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1682076970, now seen corresponding path program 1 times [2020-09-25 13:32:40,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:40,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840094341] [2020-09-25 13:32:40,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:40,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:41,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:41,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:41,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:41,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:44,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:44,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:45,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:45,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:45,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:45,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 13:32:45,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:32:45,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 13:32:45,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:45,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:45,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:32:45,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:32:45,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 13:32:45,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:32:45,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:45,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:45,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:45,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:45,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:45,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 13:32:45,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:45,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:45,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:45,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:45,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 13:32:45,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:46,064 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 13:32:46,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840094341] [2020-09-25 13:32:46,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:32:46,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:32:46,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266337090] [2020-09-25 13:32:46,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:32:46,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:46,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:32:46,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:32:46,108 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:32:48,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:48,442 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 13:32:48,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:32:48,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-09-25 13:32:48,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:48,472 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 13:32:48,473 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 13:32:48,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:32:48,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 13:32:48,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 13:32:48,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 13:32:48,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 13:32:48,604 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 133 [2020-09-25 13:32:48,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:48,606 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 13:32:48,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:32:48,609 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 13:32:48,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 13:32:48,625 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:48,626 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:48,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:32:48,627 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:48,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:48,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1624674134, now seen corresponding path program 1 times [2020-09-25 13:32:48,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:48,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180793090] [2020-09-25 13:32:48,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:48,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:48,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:49,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:49,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:50,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:51,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:53,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:53,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 13:32:53,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:32:53,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 13:32:53,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:53,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:53,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:53,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 13:32:53,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 13:32:53,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:53,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:53,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:53,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:53,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:53,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:53,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:32:53,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:53,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:53,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:53,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:53,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:53,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:53,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:53,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:53,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:53,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:32:53,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:53,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:32:53,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:53,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:53,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:53,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:53,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:32:53,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:53,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:53,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180793090] [2020-09-25 13:32:53,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:53,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:32:53,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985996340] [2020-09-25 13:32:53,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:32:53,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:53,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:32:53,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:32:53,946 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 13:32:55,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:55,581 INFO L93 Difference]: Finished difference Result 1624 states and 2084 transitions. [2020-09-25 13:32:55,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:32:55,586 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-09-25 13:32:55,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:55,595 INFO L225 Difference]: With dead ends: 1624 [2020-09-25 13:32:55,596 INFO L226 Difference]: Without dead ends: 981 [2020-09-25 13:32:55,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:32:55,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2020-09-25 13:32:55,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 969. [2020-09-25 13:32:55,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 969 states. [2020-09-25 13:32:55,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1223 transitions. [2020-09-25 13:32:55,648 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1223 transitions. Word has length 151 [2020-09-25 13:32:55,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:55,649 INFO L479 AbstractCegarLoop]: Abstraction has 969 states and 1223 transitions. [2020-09-25 13:32:55,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:32:55,649 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1223 transitions. [2020-09-25 13:32:55,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 13:32:55,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:55,655 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:55,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:32:55,655 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:55,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:55,656 INFO L82 PathProgramCache]: Analyzing trace with hash -2099256184, now seen corresponding path program 1 times [2020-09-25 13:32:55,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:55,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052595052] [2020-09-25 13:32:55,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:55,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:55,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:56,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:56,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:57,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:58,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:58,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:59,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:00,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:00,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 13:33:00,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:33:00,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 13:33:00,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:00,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 13:33:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 13:33:00,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:00,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:00,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:00,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:00,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:00,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:00,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:33:00,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:00,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:00,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:00,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:00,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:00,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:00,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:00,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:00,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:00,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:00,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:00,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 13:33:00,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:00,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:00,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:00,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:00,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:33:00,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:01,025 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:01,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052595052] [2020-09-25 13:33:01,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:01,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:33:01,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132310230] [2020-09-25 13:33:01,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:01,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:01,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:01,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:01,028 INFO L87 Difference]: Start difference. First operand 969 states and 1223 transitions. Second operand 5 states. [2020-09-25 13:33:02,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:02,864 INFO L93 Difference]: Finished difference Result 2528 states and 3348 transitions. [2020-09-25 13:33:02,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:33:02,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-09-25 13:33:02,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:02,886 INFO L225 Difference]: With dead ends: 2528 [2020-09-25 13:33:02,887 INFO L226 Difference]: Without dead ends: 1581 [2020-09-25 13:33:02,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:33:02,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2020-09-25 13:33:02,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1569. [2020-09-25 13:33:02,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-09-25 13:33:02,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2037 transitions. [2020-09-25 13:33:02,960 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2037 transitions. Word has length 155 [2020-09-25 13:33:02,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:02,961 INFO L479 AbstractCegarLoop]: Abstraction has 1569 states and 2037 transitions. [2020-09-25 13:33:02,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:02,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2037 transitions. [2020-09-25 13:33:02,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 13:33:02,970 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:02,970 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:02,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:33:02,974 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:02,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:02,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1527084426, now seen corresponding path program 1 times [2020-09-25 13:33:02,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:02,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026476802] [2020-09-25 13:33:02,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:03,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:03,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:03,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:03,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:04,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:04,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:06,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:08,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:08,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 13:33:08,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:33:08,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 13:33:08,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:08,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:08,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:08,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 13:33:08,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 13:33:08,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:08,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:08,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:08,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:08,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:08,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:08,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:33:08,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:08,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:08,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:08,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:08,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:08,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:08,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 13:33:08,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:08,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 13:33:08,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:08,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:08,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:08,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:08,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 13:33:08,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:08,307 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:08,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026476802] [2020-09-25 13:33:08,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:08,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:33:08,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684774724] [2020-09-25 13:33:08,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:08,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:08,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:08,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:08,310 INFO L87 Difference]: Start difference. First operand 1569 states and 2037 transitions. Second operand 5 states. [2020-09-25 13:33:10,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:10,137 INFO L93 Difference]: Finished difference Result 3752 states and 5020 transitions. [2020-09-25 13:33:10,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:33:10,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-25 13:33:10,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:10,155 INFO L225 Difference]: With dead ends: 3752 [2020-09-25 13:33:10,155 INFO L226 Difference]: Without dead ends: 2205 [2020-09-25 13:33:10,162 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 13:33:10,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2020-09-25 13:33:10,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 2029. [2020-09-25 13:33:10,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2029 states. [2020-09-25 13:33:10,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2029 states to 2029 states and 2572 transitions. [2020-09-25 13:33:10,242 INFO L78 Accepts]: Start accepts. Automaton has 2029 states and 2572 transitions. Word has length 168 [2020-09-25 13:33:10,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:10,242 INFO L479 AbstractCegarLoop]: Abstraction has 2029 states and 2572 transitions. [2020-09-25 13:33:10,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:10,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 2572 transitions. [2020-09-25 13:33:10,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 13:33:10,254 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:10,254 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:33:10,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:33:10,255 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:10,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:10,255 INFO L82 PathProgramCache]: Analyzing trace with hash -675007840, now seen corresponding path program 1 times [2020-09-25 13:33:10,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:10,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981133028] [2020-09-25 13:33:10,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:10,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:10,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:10,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:11,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:11,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:11,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:13,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:13,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:13,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:15,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:15,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-25 13:33:15,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:33:15,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:33:15,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:15,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:15,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:15,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 13:33:15,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 13:33:15,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:15,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:15,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:15,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:15,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:15,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:15,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:33:15,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:15,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:15,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:15,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:15,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:15,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:15,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:15,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:15,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:33:15,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:15,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:33:15,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:15,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:15,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:15,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:15,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:33:15,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:15,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:33:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:15,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:15,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:15,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 13:33:15,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:15,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 13:33:15,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:15,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:15,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:15,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:15,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 13:33:15,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 96 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:33:15,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981133028] [2020-09-25 13:33:15,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:15,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:33:15,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106786858] [2020-09-25 13:33:15,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:33:15,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:15,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:33:15,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:33:15,692 INFO L87 Difference]: Start difference. First operand 2029 states and 2572 transitions. Second operand 7 states. [2020-09-25 13:33:18,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:18,709 INFO L93 Difference]: Finished difference Result 5020 states and 7011 transitions. [2020-09-25 13:33:18,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:33:18,710 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2020-09-25 13:33:18,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:18,735 INFO L225 Difference]: With dead ends: 5020 [2020-09-25 13:33:18,735 INFO L226 Difference]: Without dead ends: 3013 [2020-09-25 13:33:18,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:33:18,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3013 states. [2020-09-25 13:33:18,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3013 to 2698. [2020-09-25 13:33:18,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2698 states. [2020-09-25 13:33:18,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 3454 transitions. [2020-09-25 13:33:18,867 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 3454 transitions. Word has length 236 [2020-09-25 13:33:18,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:18,868 INFO L479 AbstractCegarLoop]: Abstraction has 2698 states and 3454 transitions. [2020-09-25 13:33:18,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:33:18,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 3454 transitions. [2020-09-25 13:33:18,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-09-25 13:33:18,882 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:18,883 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:33:18,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:33:18,883 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:18,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:18,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1362761069, now seen corresponding path program 1 times [2020-09-25 13:33:18,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:18,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396230878] [2020-09-25 13:33:18,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:18,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:18,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:19,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:19,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:19,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:20,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:22,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:23,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:23,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-09-25 13:33:23,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:33:23,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:33:23,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:23,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-25 13:33:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 13:33:23,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:23,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:23,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:24,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:24,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:24,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:24,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:33:24,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:24,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:24,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:24,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:24,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:24,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:24,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:24,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:24,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:24,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:33:24,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:24,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:33:24,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:24,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:24,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:24,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:24,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:24,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:24,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:33:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:24,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:24,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:24,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:33:24,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:24,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:33:24,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:24,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:24,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:33:24,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:24,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 13:33:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:24,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:24,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:24,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:24,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 13:33:24,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:33:24,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 13:33:24,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:24,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:24,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:24,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:24,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 13:33:24,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:24,316 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 13:33:24,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396230878] [2020-09-25 13:33:24,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:24,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:33:24,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283550825] [2020-09-25 13:33:24,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:33:24,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:24,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:33:24,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:33:24,319 INFO L87 Difference]: Start difference. First operand 2698 states and 3454 transitions. Second operand 7 states.