/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:18:18,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:18:18,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:18:18,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:18:18,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:18:18,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:18:18,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:18:18,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:18:18,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:18:18,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:18:18,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:18:18,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:18:18,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:18:18,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:18:18,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:18:18,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:18:18,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:18:18,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:18:18,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:18:18,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:18:18,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:18:18,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:18:18,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:18:18,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:18:18,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:18:18,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:18:18,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:18:18,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:18:18,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:18:18,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:18:18,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:18:18,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:18:18,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:18:18,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:18:18,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:18:18,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:18:18,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:18:18,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:18:18,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:18:18,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:18:18,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:18:18,364 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 11:18:18,391 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:18:18,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:18:18,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:18:18,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:18:18,393 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:18:18,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:18:18,394 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:18:18,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:18:18,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:18:18,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:18:18,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:18:18,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:18:18,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:18:18,395 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:18:18,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:18:18,395 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:18:18,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:18:18,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:18:18,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:18:18,396 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:18:18,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:18:18,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:18:18,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:18:18,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:18:18,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:18:18,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:18:18,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:18:18,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:18:18,398 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:18:18,398 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:18:18,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:18:18,883 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:18:18,891 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:18:18,895 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:18:18,897 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:18:18,898 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-09-25 11:18:18,982 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e37e98c20/7d6a01b646b7412e8e3bb6e1c9099989/FLAGa86562b9e [2020-09-25 11:18:19,663 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:18:19,664 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-09-25 11:18:19,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e37e98c20/7d6a01b646b7412e8e3bb6e1c9099989/FLAGa86562b9e [2020-09-25 11:18:19,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e37e98c20/7d6a01b646b7412e8e3bb6e1c9099989 [2020-09-25 11:18:19,883 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:18:19,891 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:18:19,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:19,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:18:19,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:18:19,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:19" (1/1) ... [2020-09-25 11:18:19,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:19, skipping insertion in model container [2020-09-25 11:18:19,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:19" (1/1) ... [2020-09-25 11:18:19,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:18:19,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:18:20,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:20,485 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:18:20,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:20,728 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:18:20,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:20 WrapperNode [2020-09-25 11:18:20,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:20,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:18:20,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:18:20,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:18:20,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:20" (1/1) ... [2020-09-25 11:18:20,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:20" (1/1) ... [2020-09-25 11:18:20,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:20" (1/1) ... [2020-09-25 11:18:20,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:20" (1/1) ... [2020-09-25 11:18:20,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:20" (1/1) ... [2020-09-25 11:18:20,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:20" (1/1) ... [2020-09-25 11:18:20,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:20" (1/1) ... [2020-09-25 11:18:20,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:18:20,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:18:20,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:18:20,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:18:20,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:20" (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 11:18:20,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:18:20,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:18:20,953 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:18:20,953 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:18:20,953 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:18:20,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:18:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:18:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:18:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:18:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:18:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:18:22,518 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:18:22,518 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:18:22,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:22 BoogieIcfgContainer [2020-09-25 11:18:22,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:18:22,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:18:22,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:18:22,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:18:22,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:18:19" (1/3) ... [2020-09-25 11:18:22,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:22, skipping insertion in model container [2020-09-25 11:18:22,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:20" (2/3) ... [2020-09-25 11:18:22,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:22, skipping insertion in model container [2020-09-25 11:18:22,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:22" (3/3) ... [2020-09-25 11:18:22,539 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label06.c [2020-09-25 11:18:22,551 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:18:22,563 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:18:22,587 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:18:22,622 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:18:22,623 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:18:22,623 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:18:22,623 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:18:22,623 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:18:22,623 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:18:22,623 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:18:22,624 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:18:22,655 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:18:22,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 11:18:22,665 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:22,666 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] [2020-09-25 11:18:22,667 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:22,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:22,675 INFO L82 PathProgramCache]: Analyzing trace with hash -200720489, now seen corresponding path program 1 times [2020-09-25 11:18:22,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:22,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939204010] [2020-09-25 11:18:22,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:22,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:23,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:23,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:23,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:23,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 11:18:23,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:18:23,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1050 [2020-09-25 11:18:23,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:23,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:18:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:18:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 11:18:23,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:18:24,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:24,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:24,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:24,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:24,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:24,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 11:18:24,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:24,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:24,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:24,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:24,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:18:24,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:24,142 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 11:18:24,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939204010] [2020-09-25 11:18:24,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:18:24,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:18:24,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683837446] [2020-09-25 11:18:24,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:18:24,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:24,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:18:24,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:18:24,179 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 11:18:26,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:26,499 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 11:18:26,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:18:26,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-25 11:18:26,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:26,525 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 11:18:26,526 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 11:18:26,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:18:26,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 11:18:26,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 11:18:26,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 11:18:26,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 11:18:26,636 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 43 [2020-09-25 11:18:26,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:26,637 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 11:18:26,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:18:26,637 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 11:18:26,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 11:18:26,644 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:26,645 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:26,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:18:26,645 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:26,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:26,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1041597203, now seen corresponding path program 1 times [2020-09-25 11:18:26,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:26,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759643800] [2020-09-25 11:18:26,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:26,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:26,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:27,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:27,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:28,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:28,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:28,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-25 11:18:28,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:18:28,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1784 [2020-09-25 11:18:28,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:28,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:28,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:18:28,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:18:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 11:18:28,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:28,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:28,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:28,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:28,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:28,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:28,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:18:28,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:28,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:28,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:28,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:28,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:18:28,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:28,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:28,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:28,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:29,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:29,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:18:29,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:29,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-09-25 11:18:29,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:29,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:29,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:29,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:29,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 11:18:29,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:29,134 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:18:29,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759643800] [2020-09-25 11:18:29,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:29,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:18:29,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519271540] [2020-09-25 11:18:29,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:18:29,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:29,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:18:29,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:18:29,141 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 11:18:31,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:31,510 INFO L93 Difference]: Finished difference Result 1475 states and 1880 transitions. [2020-09-25 11:18:31,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:18:31,511 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-09-25 11:18:31,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:31,519 INFO L225 Difference]: With dead ends: 1475 [2020-09-25 11:18:31,519 INFO L226 Difference]: Without dead ends: 947 [2020-09-25 11:18:31,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:18:31,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2020-09-25 11:18:31,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 888. [2020-09-25 11:18:31,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-09-25 11:18:31,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1122 transitions. [2020-09-25 11:18:31,603 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1122 transitions. Word has length 123 [2020-09-25 11:18:31,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:31,606 INFO L479 AbstractCegarLoop]: Abstraction has 888 states and 1122 transitions. [2020-09-25 11:18:31,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:18:31,606 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1122 transitions. [2020-09-25 11:18:31,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 11:18:31,619 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:31,619 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:31,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:18:31,620 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:31,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:31,620 INFO L82 PathProgramCache]: Analyzing trace with hash -203251606, now seen corresponding path program 1 times [2020-09-25 11:18:31,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:31,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501858446] [2020-09-25 11:18:31,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:31,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:32,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:32,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:32,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:34,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:34,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 11:18:34,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:18:34,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3027 [2020-09-25 11:18:34,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:34,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:34,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:18:34,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:18:34,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 11:18:34,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:34,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:34,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:34,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:34,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:34,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:34,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 11:18:34,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:34,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:34,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:34,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:34,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:18:34,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:34,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:34,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:35,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:35,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:18:35,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:35,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-09-25 11:18:35,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:35,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:35,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:18:35,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:35,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:18:35,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:35,450 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:35,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501858446] [2020-09-25 11:18:35,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:35,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 11:18:35,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943993904] [2020-09-25 11:18:35,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:18:35,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:35,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:18:35,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:18:35,455 INFO L87 Difference]: Start difference. First operand 888 states and 1122 transitions. Second operand 12 states. [2020-09-25 11:18:38,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:38,604 INFO L93 Difference]: Finished difference Result 2017 states and 2625 transitions. [2020-09-25 11:18:38,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 11:18:38,606 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 132 [2020-09-25 11:18:38,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:38,618 INFO L225 Difference]: With dead ends: 2017 [2020-09-25 11:18:38,618 INFO L226 Difference]: Without dead ends: 1116 [2020-09-25 11:18:38,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:18:38,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2020-09-25 11:18:38,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 1042. [2020-09-25 11:18:38,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2020-09-25 11:18:38,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1310 transitions. [2020-09-25 11:18:38,693 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1310 transitions. Word has length 132 [2020-09-25 11:18:38,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:38,694 INFO L479 AbstractCegarLoop]: Abstraction has 1042 states and 1310 transitions. [2020-09-25 11:18:38,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 11:18:38,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1310 transitions. [2020-09-25 11:18:38,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 11:18:38,703 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:38,703 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:38,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:18:38,703 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:38,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:38,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1010276362, now seen corresponding path program 1 times [2020-09-25 11:18:38,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:38,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143688974] [2020-09-25 11:18:38,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:38,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:39,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:39,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:39,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:40,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:41,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:41,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:43,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:43,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 11:18:43,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:18:43,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 11:18:43,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:43,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:43,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:18:43,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:18:43,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 11:18:43,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:43,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:43,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:43,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:43,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:43,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:43,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:18:43,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:43,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:43,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:43,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:43,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:18:43,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:43,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:43,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:44,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:44,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:44,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 11:18:44,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:44,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-09-25 11:18:44,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:44,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:44,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:18:44,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:44,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 11:18:44,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:44,376 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:44,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143688974] [2020-09-25 11:18:44,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:44,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:18:44,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283437990] [2020-09-25 11:18:44,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:18:44,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:44,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:18:44,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:18:44,382 INFO L87 Difference]: Start difference. First operand 1042 states and 1310 transitions. Second operand 7 states. [2020-09-25 11:18:47,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:47,671 INFO L93 Difference]: Finished difference Result 2943 states and 3891 transitions. [2020-09-25 11:18:47,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:18:47,672 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-09-25 11:18:47,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:47,687 INFO L225 Difference]: With dead ends: 2943 [2020-09-25 11:18:47,688 INFO L226 Difference]: Without dead ends: 2066 [2020-09-25 11:18:47,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:18:47,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2020-09-25 11:18:47,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 1659. [2020-09-25 11:18:47,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1659 states. [2020-09-25 11:18:47,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2173 transitions. [2020-09-25 11:18:47,783 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2173 transitions. Word has length 151 [2020-09-25 11:18:47,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:47,786 INFO L479 AbstractCegarLoop]: Abstraction has 1659 states and 2173 transitions. [2020-09-25 11:18:47,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:18:47,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2173 transitions. [2020-09-25 11:18:47,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 11:18:47,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:47,791 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:47,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:18:47,792 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:47,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:47,793 INFO L82 PathProgramCache]: Analyzing trace with hash -591181850, now seen corresponding path program 1 times [2020-09-25 11:18:47,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:47,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424672536] [2020-09-25 11:18:47,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:47,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:48,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:48,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:48,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:48,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:51,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:51,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 11:18:51,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:18:51,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3204 [2020-09-25 11:18:51,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:51,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:51,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:18:51,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:18:51,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 11:18:51,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:51,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:51,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:51,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:51,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:51,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:51,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:18:51,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:51,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:51,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:51,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:51,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:18:51,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:51,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:51,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:51,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:51,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 11:18:51,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:51,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-25 11:18:51,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:51,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:51,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:51,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:51,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 11:18:51,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:51,606 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:51,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424672536] [2020-09-25 11:18:51,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:18:51,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 11:18:51,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985911987] [2020-09-25 11:18:51,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:18:51,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:51,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:18:51,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:18:51,609 INFO L87 Difference]: Start difference. First operand 1659 states and 2173 transitions. Second operand 8 states. [2020-09-25 11:18:54,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:54,472 INFO L93 Difference]: Finished difference Result 5167 states and 7222 transitions. [2020-09-25 11:18:54,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:18:54,473 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 11:18:54,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:54,497 INFO L225 Difference]: With dead ends: 5167 [2020-09-25 11:18:54,497 INFO L226 Difference]: Without dead ends: 3673 [2020-09-25 11:18:54,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:18:54,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3673 states. [2020-09-25 11:18:54,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3673 to 3341. [2020-09-25 11:18:54,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3341 states. [2020-09-25 11:18:54,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3341 states to 3341 states and 4503 transitions. [2020-09-25 11:18:54,636 INFO L78 Accepts]: Start accepts. Automaton has 3341 states and 4503 transitions. Word has length 165 [2020-09-25 11:18:54,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:54,636 INFO L479 AbstractCegarLoop]: Abstraction has 3341 states and 4503 transitions. [2020-09-25 11:18:54,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:18:54,636 INFO L276 IsEmpty]: Start isEmpty. Operand 3341 states and 4503 transitions. [2020-09-25 11:18:54,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-25 11:18:54,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:54,641 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:18:54,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:18:54,641 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:54,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:54,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1479799897, now seen corresponding path program 1 times [2020-09-25 11:18:54,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:54,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178897594] [2020-09-25 11:18:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:54,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:54,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:55,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:55,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:57,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:59,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:59,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:59,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-09-25 11:18:59,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:18:59,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-09-25 11:18:59,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:59,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:18:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:18:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 11:18:59,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:59,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:59,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:59,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:59,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:59,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:59,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:18:59,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:59,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:59,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:59,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:59,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:18:59,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:59,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:59,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:59,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:59,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:18:59,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:59,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 11:18:59,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:59,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:59,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:18:59,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:59,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:18:59,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:00,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:19:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:00,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:00,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:00,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:19:00,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:00,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-09-25 11:19:00,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:00,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:00,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:00,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:00,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:19:00,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:00,598 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 120 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:19:00,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178897594] [2020-09-25 11:19:00,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:00,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:19:00,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412513745] [2020-09-25 11:19:00,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:19:00,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:00,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:19:00,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:19:00,603 INFO L87 Difference]: Start difference. First operand 3341 states and 4503 transitions. Second operand 10 states. [2020-09-25 11:19:04,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:04,162 INFO L93 Difference]: Finished difference Result 7477 states and 10438 transitions. [2020-09-25 11:19:04,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 11:19:04,163 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 211 [2020-09-25 11:19:04,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:04,188 INFO L225 Difference]: With dead ends: 7477 [2020-09-25 11:19:04,189 INFO L226 Difference]: Without dead ends: 4301 [2020-09-25 11:19:04,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-09-25 11:19:04,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4301 states. [2020-09-25 11:19:04,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4301 to 4198. [2020-09-25 11:19:04,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4198 states. [2020-09-25 11:19:04,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4198 states to 4198 states and 5609 transitions. [2020-09-25 11:19:04,324 INFO L78 Accepts]: Start accepts. Automaton has 4198 states and 5609 transitions. Word has length 211 [2020-09-25 11:19:04,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:04,324 INFO L479 AbstractCegarLoop]: Abstraction has 4198 states and 5609 transitions. [2020-09-25 11:19:04,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:19:04,324 INFO L276 IsEmpty]: Start isEmpty. Operand 4198 states and 5609 transitions. [2020-09-25 11:19:04,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-25 11:19:04,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:04,330 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:19:04,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:19:04,331 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:04,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:04,331 INFO L82 PathProgramCache]: Analyzing trace with hash -12142129, now seen corresponding path program 1 times [2020-09-25 11:19:04,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:04,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295249455] [2020-09-25 11:19:04,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:04,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:04,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:04,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-09-25 11:19:04,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:04,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-09-25 11:19:04,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:04,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:04,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:04,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 223 [2020-09-25 11:19:04,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 11:19:04,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:04,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:04,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:04,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:04,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:04,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:04,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:19:04,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:04,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:04,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:19:04,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:04,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:19:04,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:04,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:04,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:04,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:04,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 11:19:04,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:04,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 11:19:04,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:04,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:04,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:19:04,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:04,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:19:04,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:05,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 11:19:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:05,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:05,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:05,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:19:05,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:05,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 11:19:05,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:05,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:05,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:05,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:05,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 11:19:05,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:05,177 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 11:19:05,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295249455] [2020-09-25 11:19:05,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:05,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:19:05,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855404222] [2020-09-25 11:19:05,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:19:05,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:05,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:19:05,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:19:05,180 INFO L87 Difference]: Start difference. First operand 4198 states and 5609 transitions. Second operand 5 states.