/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=0.3 --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_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:27:43,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:27:43,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:27:43,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:27:43,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:27:43,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:27:43,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:27:43,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:27:43,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:27:43,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:27:43,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:27:43,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:27:43,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:27:43,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:27:43,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:27:43,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:27:43,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:27:43,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:27:43,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:27:43,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:27:43,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:27:43,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:27:43,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:27:43,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:27:43,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:27:43,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:27:43,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:27:43,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:27:43,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:27:43,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:27:43,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:27:43,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:27:43,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:27:43,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:27:43,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:27:43,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:27:43,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:27:43,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:27:43,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:27:43,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:27:43,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:27:43,397 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 12:27:43,430 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:27:43,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:27:43,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:27:43,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:27:43,432 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:27:43,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:27:43,432 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:27:43,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:27:43,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:27:43,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:27:43,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:27:43,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:27:43,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:27:43,434 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:27:43,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:27:43,434 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:27:43,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:27:43,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:27:43,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:27:43,435 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:27:43,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:27:43,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:27:43,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:27:43,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:27:43,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:27:43,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:27:43,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:27:43,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:27:43,437 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:27:43,437 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:27:43,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:27:43,924 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:27:43,928 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:27:43,930 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:27:43,931 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:27:43,932 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label54.c [2020-09-25 12:27:44,018 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18aa27c49/1b0583a4619847dcb9ad005b0d936ece/FLAGf22b64f69 [2020-09-25 12:27:44,624 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:27:44,625 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label54.c [2020-09-25 12:27:44,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18aa27c49/1b0583a4619847dcb9ad005b0d936ece/FLAGf22b64f69 [2020-09-25 12:27:44,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18aa27c49/1b0583a4619847dcb9ad005b0d936ece [2020-09-25 12:27:44,882 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:27:44,890 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:27:44,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:44,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:27:44,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:27:44,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:44" (1/1) ... [2020-09-25 12:27:44,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25dd80d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:44, skipping insertion in model container [2020-09-25 12:27:44,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:44" (1/1) ... [2020-09-25 12:27:44,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:27:44,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:27:45,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:45,548 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:27:45,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:45,715 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:27:45,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:45 WrapperNode [2020-09-25 12:27:45,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:45,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:27:45,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:27:45,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:27:45,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:45" (1/1) ... [2020-09-25 12:27:45,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:45" (1/1) ... [2020-09-25 12:27:45,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:45" (1/1) ... [2020-09-25 12:27:45,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:45" (1/1) ... [2020-09-25 12:27:45,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:45" (1/1) ... [2020-09-25 12:27:45,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:45" (1/1) ... [2020-09-25 12:27:45,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:45" (1/1) ... [2020-09-25 12:27:45,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:27:45,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:27:45,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:27:45,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:27:45,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:45" (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 12:27:45,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:27:45,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:27:45,965 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:27:45,965 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:27:45,965 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:27:45,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:27:45,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:27:45,966 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:27:45,966 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:27:45,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:27:45,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:27:47,499 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:27:47,499 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:27:47,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:47 BoogieIcfgContainer [2020-09-25 12:27:47,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:27:47,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:27:47,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:27:47,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:27:47,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:27:44" (1/3) ... [2020-09-25 12:27:47,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd7d0fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:47, skipping insertion in model container [2020-09-25 12:27:47,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:45" (2/3) ... [2020-09-25 12:27:47,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd7d0fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:47, skipping insertion in model container [2020-09-25 12:27:47,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:47" (3/3) ... [2020-09-25 12:27:47,518 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label54.c [2020-09-25 12:27:47,531 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:27:47,542 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:27:47,567 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:27:47,604 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:27:47,604 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:27:47,604 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:27:47,605 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:27:47,605 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:27:47,605 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:27:47,605 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:27:47,605 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:27:47,637 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:27:47,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 12:27:47,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:47,653 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] [2020-09-25 12:27:47,653 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:47,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:47,662 INFO L82 PathProgramCache]: Analyzing trace with hash -2126243537, now seen corresponding path program 1 times [2020-09-25 12:27:47,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:47,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506757823] [2020-09-25 12:27:47,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:48,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:48,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:48,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:49,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:49,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 12:27:49,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:27:49,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1334 [2020-09-25 12:27:49,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:49,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:49,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:49,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:49,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:27:49,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:27:49,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:49,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:49,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:49,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:49,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:49,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:27:49,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:49,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:49,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:49,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:49,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:49,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:27:49,491 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 12:27:49,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506757823] [2020-09-25 12:27:49,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:49,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:27:49,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608176412] [2020-09-25 12:27:49,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:27:49,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:49,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:27:49,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:27:49,528 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 12:27:51,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:51,861 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 12:27:51,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:27:51,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-09-25 12:27:51,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:51,913 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 12:27:51,914 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 12:27:51,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 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 12:27:51,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 12:27:52,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 12:27:52,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 12:27:52,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 12:27:52,117 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 81 [2020-09-25 12:27:52,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:52,118 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 12:27:52,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:27:52,119 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 12:27:52,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 12:27:52,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:52,128 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:52,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:27:52,129 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:52,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:52,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1687287808, now seen corresponding path program 1 times [2020-09-25 12:27:52,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:52,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473218080] [2020-09-25 12:27:52,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:52,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:52,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:52,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:52,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:52,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:52,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:53,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:57,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:57,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 12:27:57,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:27:57,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 12:27:57,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:57,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:57,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:27:57,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:27:57,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-09-25 12:27:57,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:57,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:57,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:57,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:57,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:57,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:57,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:27:57,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:57,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:57,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:57,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:57,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:27:57,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:57,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:57,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:57,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:57,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:57,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:27:57,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:57,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 12:27:57,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:57,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:57,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:57,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:57,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 12:27:57,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:57,699 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:27:57,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473218080] [2020-09-25 12:27:57,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:57,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:27:57,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438071939] [2020-09-25 12:27:57,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:27:57,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:57,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:27:57,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:27:57,704 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 12:27:59,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:59,276 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 12:27:59,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:27:59,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-25 12:27:59,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:59,291 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 12:27:59,292 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 12:27:59,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 12:27:59,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 12:27:59,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 12:27:59,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 12:27:59,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 12:27:59,321 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 160 [2020-09-25 12:27:59,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:59,322 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 12:27:59,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:27:59,323 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 12:27:59,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 12:27:59,327 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:59,328 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:59,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:27:59,328 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:59,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:59,329 INFO L82 PathProgramCache]: Analyzing trace with hash 935848482, now seen corresponding path program 1 times [2020-09-25 12:27:59,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:59,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493221748] [2020-09-25 12:27:59,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:59,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:59,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:59,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:00,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:02,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:02,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:04,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:04,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 12:28:04,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:28:04,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 12:28:04,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:04,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:04,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:28:04,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:28:04,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 12:28:04,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:04,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:04,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:04,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:04,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:04,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:04,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:28:04,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:04,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:04,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:28:04,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:04,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:28:04,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:04,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:04,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:04,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:04,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:04,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:28:04,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:04,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-25 12:28:04,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:04,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:04,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:04,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:04,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 12:28:04,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:05,007 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:05,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493221748] [2020-09-25 12:28:05,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:05,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 12:28:05,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960011345] [2020-09-25 12:28:05,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 12:28:05,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:05,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 12:28:05,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:28:05,010 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 12 states. [2020-09-25 12:28:07,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:07,454 INFO L93 Difference]: Finished difference Result 1614 states and 2050 transitions. [2020-09-25 12:28:07,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:28:07,455 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 170 [2020-09-25 12:28:07,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:07,462 INFO L225 Difference]: With dead ends: 1614 [2020-09-25 12:28:07,462 INFO L226 Difference]: Without dead ends: 1015 [2020-09-25 12:28:07,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:28:07,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-09-25 12:28:07,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 995. [2020-09-25 12:28:07,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-09-25 12:28:07,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1212 transitions. [2020-09-25 12:28:07,498 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1212 transitions. Word has length 170 [2020-09-25 12:28:07,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:07,499 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1212 transitions. [2020-09-25 12:28:07,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 12:28:07,499 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1212 transitions. [2020-09-25 12:28:07,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 12:28:07,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:07,502 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:07,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:28:07,503 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:07,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:07,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1528839770, now seen corresponding path program 1 times [2020-09-25 12:28:07,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:07,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338084452] [2020-09-25 12:28:07,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:07,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:07,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:07,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:07,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:08,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:10,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:10,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 12:28:10,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:28:10,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3092 [2020-09-25 12:28:10,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:10,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:28:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:28:10,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-09-25 12:28:10,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:10,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:10,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:10,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:10,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:10,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:10,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:28:10,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:10,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:10,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:10,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:10,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:28:10,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:10,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:10,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:10,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:10,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 12:28:10,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:10,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 12:28:10,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:10,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:10,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:28:10,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:10,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 12:28:10,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:11,027 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:11,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338084452] [2020-09-25 12:28:11,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:11,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:28:11,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020433863] [2020-09-25 12:28:11,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:28:11,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:11,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:28:11,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:28:11,030 INFO L87 Difference]: Start difference. First operand 995 states and 1212 transitions. Second operand 8 states. [2020-09-25 12:28:14,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:14,381 INFO L93 Difference]: Finished difference Result 2376 states and 2949 transitions. [2020-09-25 12:28:14,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:28:14,382 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 172 [2020-09-25 12:28:14,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:14,390 INFO L225 Difference]: With dead ends: 2376 [2020-09-25 12:28:14,390 INFO L226 Difference]: Without dead ends: 1546 [2020-09-25 12:28:14,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:28:14,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2020-09-25 12:28:14,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1505. [2020-09-25 12:28:14,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1505 states. [2020-09-25 12:28:14,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 1792 transitions. [2020-09-25 12:28:14,436 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 1792 transitions. Word has length 172 [2020-09-25 12:28:14,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:14,437 INFO L479 AbstractCegarLoop]: Abstraction has 1505 states and 1792 transitions. [2020-09-25 12:28:14,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:28:14,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 1792 transitions. [2020-09-25 12:28:14,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 12:28:14,441 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:14,441 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:14,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:28:14,441 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:14,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:14,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1456275438, now seen corresponding path program 1 times [2020-09-25 12:28:14,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:14,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451093465] [2020-09-25 12:28:14,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:14,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:14,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:14,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:15,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:19,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:19,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 12:28:19,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:28:19,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 12:28:19,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:19,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:19,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:28:19,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:28:19,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 12:28:19,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:19,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:19,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:19,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:19,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:19,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:19,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:28:19,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:19,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:19,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:28:19,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:19,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:28:19,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:19,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:19,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:20,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:20,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:20,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 12:28:20,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:20,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-09-25 12:28:20,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:20,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:20,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:28:20,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:20,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 12:28:20,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:20,573 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:20,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451093465] [2020-09-25 12:28:20,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:20,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:28:20,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506415488] [2020-09-25 12:28:20,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:28:20,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:20,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:28:20,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:28:20,585 INFO L87 Difference]: Start difference. First operand 1505 states and 1792 transitions. Second operand 11 states. [2020-09-25 12:28:24,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:24,669 INFO L93 Difference]: Finished difference Result 3386 states and 4307 transitions. [2020-09-25 12:28:24,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:28:24,670 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 189 [2020-09-25 12:28:24,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:24,683 INFO L225 Difference]: With dead ends: 3386 [2020-09-25 12:28:24,684 INFO L226 Difference]: Without dead ends: 2491 [2020-09-25 12:28:24,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-09-25 12:28:24,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2491 states. [2020-09-25 12:28:24,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2491 to 2305. [2020-09-25 12:28:24,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-09-25 12:28:24,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 2811 transitions. [2020-09-25 12:28:24,759 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 2811 transitions. Word has length 189 [2020-09-25 12:28:24,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:24,759 INFO L479 AbstractCegarLoop]: Abstraction has 2305 states and 2811 transitions. [2020-09-25 12:28:24,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:28:24,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 2811 transitions. [2020-09-25 12:28:24,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 12:28:24,764 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:24,765 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:24,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:28:24,765 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:24,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:24,766 INFO L82 PathProgramCache]: Analyzing trace with hash 2121536478, now seen corresponding path program 1 times [2020-09-25 12:28:24,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:24,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023267780] [2020-09-25 12:28:24,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:24,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:24,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:28,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:28,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:28,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:29,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:29,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 12:28:29,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:28:29,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 12:28:29,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:29,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:29,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:28:29,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:28:29,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 12:28:29,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:30,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:30,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:30,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:30,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:30,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:30,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:28:30,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:30,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:30,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:28:30,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:30,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:28:30,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:30,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:30,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:30,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:30,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:30,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 12:28:30,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:30,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-09-25 12:28:30,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:30,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:30,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:28:30,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:30,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 12:28:30,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1