/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:41:01,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:41:01,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:41:01,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:41:01,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:41:01,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:41:01,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:41:01,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:41:01,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:41:01,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:41:01,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:41:01,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:41:01,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:41:01,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:41:01,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:41:01,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:41:01,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:41:01,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:41:01,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:41:01,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:41:01,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:41:01,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:41:01,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:41:01,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:41:01,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:41:01,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:41:01,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:41:01,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:41:01,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:41:01,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:41:01,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:41:01,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:41:01,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:41:01,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:41:01,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:41:01,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:41:01,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:41:01,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:41:01,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:41:01,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:41:01,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:41:01,295 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:41:01,321 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:41:01,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:41:01,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:41:01,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:41:01,323 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:41:01,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:41:01,324 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:41:01,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:41:01,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:41:01,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:41:01,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:41:01,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:41:01,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:41:01,325 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:41:01,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:41:01,325 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:41:01,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:41:01,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:41:01,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:41:01,326 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:41:01,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:41:01,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:41:01,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:41:01,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:41:01,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:41:01,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:41:01,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:41:01,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:41:01,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:41:01,328 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:41:01,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:41:01,847 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:41:01,855 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:41:01,857 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:41:01,859 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:41:01,860 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label58.c [2020-09-25 14:41:01,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/024f3f048/aac56b504e0f463ba65b087cd6d9b726/FLAG49ecc8dfd [2020-09-25 14:41:02,651 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:41:02,655 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label58.c [2020-09-25 14:41:02,685 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/024f3f048/aac56b504e0f463ba65b087cd6d9b726/FLAG49ecc8dfd [2020-09-25 14:41:02,864 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/024f3f048/aac56b504e0f463ba65b087cd6d9b726 [2020-09-25 14:41:02,876 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:41:02,883 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:41:02,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:02,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:41:02,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:41:02,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:02" (1/1) ... [2020-09-25 14:41:02,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39bc374b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:02, skipping insertion in model container [2020-09-25 14:41:02,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:02" (1/1) ... [2020-09-25 14:41:02,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:41:02,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:41:03,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:03,569 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:41:03,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:03,746 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:41:03,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:03 WrapperNode [2020-09-25 14:41:03,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:03,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:41:03,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:41:03,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:41:03,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:03" (1/1) ... [2020-09-25 14:41:03,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:03" (1/1) ... [2020-09-25 14:41:03,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:03" (1/1) ... [2020-09-25 14:41:03,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:03" (1/1) ... [2020-09-25 14:41:03,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:03" (1/1) ... [2020-09-25 14:41:03,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:03" (1/1) ... [2020-09-25 14:41:03,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:03" (1/1) ... [2020-09-25 14:41:03,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:41:03,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:41:03,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:41:03,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:41:03,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:41:03,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:41:03,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:41:03,978 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:41:03,978 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:41:03,978 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:41:03,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:41:03,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:41:03,980 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:41:03,980 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:41:03,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:41:03,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:41:05,398 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:41:05,399 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:41:05,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:05 BoogieIcfgContainer [2020-09-25 14:41:05,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:41:05,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:41:05,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:41:05,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:41:05,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:41:02" (1/3) ... [2020-09-25 14:41:05,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd2f33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:05, skipping insertion in model container [2020-09-25 14:41:05,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:03" (2/3) ... [2020-09-25 14:41:05,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd2f33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:05, skipping insertion in model container [2020-09-25 14:41:05,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:05" (3/3) ... [2020-09-25 14:41:05,419 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label58.c [2020-09-25 14:41:05,431 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:41:05,443 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:41:05,467 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:41:05,503 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:41:05,503 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:41:05,504 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:41:05,504 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:41:05,504 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:41:05,504 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:41:05,504 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:41:05,504 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:41:05,538 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 14:41:05,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 14:41:05,559 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:05,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:05,561 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:05,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:05,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1064851622, now seen corresponding path program 1 times [2020-09-25 14:41:05,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:05,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096509868] [2020-09-25 14:41:05,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:06,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:06,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:06,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:06,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:08,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:09,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:09,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:10,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:10,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:10,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 14:41:10,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:41:10,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 14:41:10,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:10,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:10,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:10,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:41:10,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 14:41:10,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:41:11,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:11,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:11,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:11,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:11,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:11,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 14:41:11,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:11,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:11,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:11,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:11,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:41:11,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:11,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:11,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096509868] [2020-09-25 14:41:11,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:41:11,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:41:11,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707834651] [2020-09-25 14:41:11,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:41:11,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:11,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:41:11,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:41:11,260 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 14:41:14,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:14,130 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 14:41:14,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:41:14,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-09-25 14:41:14,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:14,178 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 14:41:14,178 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 14:41:14,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:41:14,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 14:41:14,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 14:41:14,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 14:41:14,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 14:41:14,363 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 129 [2020-09-25 14:41:14,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:14,365 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 14:41:14,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:41:14,365 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 14:41:14,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 14:41:14,372 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:14,372 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:14,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:41:14,373 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:14,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:14,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1793356799, now seen corresponding path program 1 times [2020-09-25 14:41:14,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:14,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172320134] [2020-09-25 14:41:14,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:14,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:14,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:15,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:15,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:17,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:17,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:19,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:19,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 14:41:19,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:41:19,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 14:41:19,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:19,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:19,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:19,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 14:41:19,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 14:41:19,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:41:19,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:19,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:19,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:19,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:19,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:19,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:41:19,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:19,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:19,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:19,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:19,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:19,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:19,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:19,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:19,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:19,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 14:41:19,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:19,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 14:41:19,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:19,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:19,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:19,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:19,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:41:19,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:19,743 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:19,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172320134] [2020-09-25 14:41:19,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:19,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:41:19,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501548831] [2020-09-25 14:41:19,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:41:19,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:19,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:41:19,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:41:19,748 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 6 states. [2020-09-25 14:41:22,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:22,077 INFO L93 Difference]: Finished difference Result 1678 states and 2148 transitions. [2020-09-25 14:41:22,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:41:22,079 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2020-09-25 14:41:22,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:22,084 INFO L225 Difference]: With dead ends: 1678 [2020-09-25 14:41:22,085 INFO L226 Difference]: Without dead ends: 712 [2020-09-25 14:41:22,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:41:22,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2020-09-25 14:41:22,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 702. [2020-09-25 14:41:22,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-09-25 14:41:22,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 833 transitions. [2020-09-25 14:41:22,122 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 833 transitions. Word has length 163 [2020-09-25 14:41:22,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:22,123 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 833 transitions. [2020-09-25 14:41:22,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:41:22,123 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 833 transitions. [2020-09-25 14:41:22,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 14:41:22,127 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:22,127 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:22,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:41:22,128 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:22,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:22,128 INFO L82 PathProgramCache]: Analyzing trace with hash -16369025, now seen corresponding path program 1 times [2020-09-25 14:41:22,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:22,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715606852] [2020-09-25 14:41:22,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:22,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:22,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:22,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:22,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:26,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:27,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:27,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 14:41:27,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:41:27,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 14:41:27,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:27,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:27,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:41:27,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 14:41:27,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 14:41:27,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:41:27,890 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2020-09-25 14:41:28,050 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 37 [2020-09-25 14:41:28,175 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 32 [2020-09-25 14:41:28,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:28,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:28,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:28,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:28,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:28,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 14:41:28,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:28,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 14:41:28,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:28,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:28,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:28,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:28,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:28,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:41:28,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:41:28,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 14:41:28,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:28,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:28,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:28,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:28,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 14:41:28,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:29,010 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:29,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715606852] [2020-09-25 14:41:29,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:29,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 14:41:29,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731901970] [2020-09-25 14:41:29,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 14:41:29,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:29,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 14:41:29,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:41:29,013 INFO L87 Difference]: Start difference. First operand 702 states and 833 transitions. Second operand 17 states. [2020-09-25 14:41:31,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:31,996 INFO L93 Difference]: Finished difference Result 1176 states and 1433 transitions. [2020-09-25 14:41:31,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:41:31,997 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 164 [2020-09-25 14:41:31,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:32,000 INFO L225 Difference]: With dead ends: 1176 [2020-09-25 14:41:32,000 INFO L226 Difference]: Without dead ends: 496 [2020-09-25 14:41:32,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2020-09-25 14:41:32,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-09-25 14:41:32,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 486. [2020-09-25 14:41:32,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-09-25 14:41:32,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 544 transitions. [2020-09-25 14:41:32,020 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 544 transitions. Word has length 164 [2020-09-25 14:41:32,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:32,021 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 544 transitions. [2020-09-25 14:41:32,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 14:41:32,021 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 544 transitions. [2020-09-25 14:41:32,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 14:41:32,023 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:32,024 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:32,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:41:32,024 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:32,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:32,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1758187067, now seen corresponding path program 1 times [2020-09-25 14:41:32,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:32,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211084601] [2020-09-25 14:41:32,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:32,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:32,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:32,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:35,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:35,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:37,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:37,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 14:41:37,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:41:37,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 14:41:37,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:37,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:37,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:41:37,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 14:41:37,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 14:41:37,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:37,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:37,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:37,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:37,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:37,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:37,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:41:37,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:37,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:37,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:37,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:37,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:37,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:37,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:37,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:37,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:37,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:41:37,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:37,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 14:41:37,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:37,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:37,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:41:37,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:37,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:41:37,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:37,757 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:37,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211084601] [2020-09-25 14:41:37,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:37,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:41:37,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173096479] [2020-09-25 14:41:37,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:41:37,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:37,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:41:37,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:41:37,760 INFO L87 Difference]: Start difference. First operand 486 states and 544 transitions. Second operand 9 states. [2020-09-25 14:41:42,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:42,163 INFO L93 Difference]: Finished difference Result 1573 states and 1831 transitions. [2020-09-25 14:41:42,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:41:42,163 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-09-25 14:41:42,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:42,174 INFO L225 Difference]: With dead ends: 1573 [2020-09-25 14:41:42,174 INFO L226 Difference]: Without dead ends: 1016 [2020-09-25 14:41:42,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:41:42,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2020-09-25 14:41:42,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 975. [2020-09-25 14:41:42,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 975 states. [2020-09-25 14:41:42,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1090 transitions. [2020-09-25 14:41:42,241 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1090 transitions. Word has length 167 [2020-09-25 14:41:42,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:42,241 INFO L479 AbstractCegarLoop]: Abstraction has 975 states and 1090 transitions. [2020-09-25 14:41:42,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:41:42,242 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1090 transitions. [2020-09-25 14:41:42,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 14:41:42,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:42,248 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:42,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:41:42,249 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:42,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:42,250 INFO L82 PathProgramCache]: Analyzing trace with hash 175574517, now seen corresponding path program 1 times [2020-09-25 14:41:42,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:42,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265923900] [2020-09-25 14:41:42,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:42,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:42,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:42,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:43,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:45,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:46,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:47,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:47,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 14:41:47,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:41:47,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 14:41:47,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:47,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:47,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:41:47,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 14:41:47,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 14:41:47,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:48,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:48,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:48,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:48,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:48,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:48,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:41:48,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:48,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:48,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:48,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:48,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:48,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:41:48,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:48,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:48,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:48,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:41:48,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:48,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 14:41:48,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:48,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:48,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:48,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:48,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:41:48,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:48,435 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:48,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265923900] [2020-09-25 14:41:48,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:48,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 14:41:48,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691213225] [2020-09-25 14:41:48,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 14:41:48,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:48,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 14:41:48,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:41:48,438 INFO L87 Difference]: Start difference. First operand 975 states and 1090 transitions. Second operand 14 states.