/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/recursive/gcd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:29:06,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:29:06,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:29:06,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:29:06,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:29:06,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:29:06,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:29:06,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:29:06,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:29:06,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:29:06,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:29:06,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:29:06,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:29:06,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:29:06,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:29:06,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:29:06,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:29:06,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:29:06,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:29:06,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:29:06,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:29:06,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:29:06,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:29:06,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:29:06,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:29:06,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:29:06,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:29:06,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:29:06,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:29:06,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:29:06,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:29:06,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:29:06,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:29:06,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:29:06,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:29:06,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:29:06,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:29:06,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:29:06,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:29:06,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:29:06,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:29:06,902 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 14:29:06,943 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:29:06,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:29:06,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:29:06,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:29:06,946 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:29:06,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:29:06,946 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:29:06,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:29:06,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:29:06,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:29:06,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:29:06,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:29:06,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:29:06,949 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:29:06,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:29:06,949 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:29:06,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:29:06,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:29:06,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:29:06,950 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:29:06,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:29:06,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:29:06,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:29:06,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:29:06,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:29:06,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:29:06,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:29:06,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:29:06,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:29:06,952 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 14:29:07,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:29:07,412 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:29:07,417 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:29:07,419 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:29:07,420 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:29:07,421 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/gcd01-1.c [2020-09-25 14:29:07,516 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a98bda8b8/2c44ad5bc24f4f9ab687aa561ab56912/FLAG0b53fb737 [2020-09-25 14:29:08,105 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:29:08,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/gcd01-1.c [2020-09-25 14:29:08,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a98bda8b8/2c44ad5bc24f4f9ab687aa561ab56912/FLAG0b53fb737 [2020-09-25 14:29:08,451 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a98bda8b8/2c44ad5bc24f4f9ab687aa561ab56912 [2020-09-25 14:29:08,467 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:29:08,474 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:29:08,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:29:08,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:29:08,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:29:08,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:29:08" (1/1) ... [2020-09-25 14:29:08,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dbe4ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:08, skipping insertion in model container [2020-09-25 14:29:08,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:29:08" (1/1) ... [2020-09-25 14:29:08,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:29:08,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:29:08,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:29:08,748 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:29:08,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:29:08,787 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:29:08,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:08 WrapperNode [2020-09-25 14:29:08,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:29:08,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:29:08,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:29:08,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:29:08,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:08" (1/1) ... [2020-09-25 14:29:08,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:08" (1/1) ... [2020-09-25 14:29:08,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:08" (1/1) ... [2020-09-25 14:29:08,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:08" (1/1) ... [2020-09-25 14:29:08,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:08" (1/1) ... [2020-09-25 14:29:08,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:08" (1/1) ... [2020-09-25 14:29:08,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:08" (1/1) ... [2020-09-25 14:29:08,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:29:08,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:29:08,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:29:08,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:29:08,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:08" (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 14:29:09,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:29:09,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:29:09,005 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2020-09-25 14:29:09,005 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:29:09,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:29:09,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:29:09,006 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2020-09-25 14:29:09,006 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:29:09,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:29:09,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:29:09,257 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:29:09,258 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 14:29:09,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:29:09 BoogieIcfgContainer [2020-09-25 14:29:09,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:29:09,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:29:09,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:29:09,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:29:09,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:29:08" (1/3) ... [2020-09-25 14:29:09,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e6465c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:29:09, skipping insertion in model container [2020-09-25 14:29:09,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:08" (2/3) ... [2020-09-25 14:29:09,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e6465c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:29:09, skipping insertion in model container [2020-09-25 14:29:09,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:29:09" (3/3) ... [2020-09-25 14:29:09,277 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd01-1.c [2020-09-25 14:29:09,293 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:29:09,305 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:29:09,349 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:29:09,410 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:29:09,411 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:29:09,411 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:29:09,411 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:29:09,411 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:29:09,411 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:29:09,412 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:29:09,412 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:29:09,434 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-25 14:29:09,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 14:29:09,442 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:09,443 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] [2020-09-25 14:29:09,444 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:09,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:09,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1470222128, now seen corresponding path program 1 times [2020-09-25 14:29:09,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:09,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228666241] [2020-09-25 14:29:09,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:09,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:09,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:10,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:10,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:29:10,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:10,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-09-25 14:29:10,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:10,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:10,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:29:10,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:29:10,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 14:29:10,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:29:10,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:10,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:10,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:10,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:10,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:10,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:10,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:10,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:10,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:10,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:10,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:10,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:10,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 14:29:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:10,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:10,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:10,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:10,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:10,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 14:29:10,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:10,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:10,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:29:10,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:10,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:29:10,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:10,328 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 14:29:10,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228666241] [2020-09-25 14:29:10,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:29:10,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:29:10,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001598859] [2020-09-25 14:29:10,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:29:10,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:10,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:29:10,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:29:10,359 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 6 states. [2020-09-25 14:29:10,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:10,537 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 14:29:10,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:29:10,540 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-25 14:29:10,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:10,557 INFO L225 Difference]: With dead ends: 58 [2020-09-25 14:29:10,557 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 14:29:10,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:29:10,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 14:29:10,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 14:29:10,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 14:29:10,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-09-25 14:29:10,628 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 24 [2020-09-25 14:29:10,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:10,629 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-09-25 14:29:10,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:29:10,629 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-09-25 14:29:10,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 14:29:10,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:10,633 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] [2020-09-25 14:29:10,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:29:10,633 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:10,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:10,634 INFO L82 PathProgramCache]: Analyzing trace with hash 831268307, now seen corresponding path program 1 times [2020-09-25 14:29:10,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:10,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035479778] [2020-09-25 14:29:10,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:10,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:10,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:10,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:11,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:11,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:29:11,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:29:11,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-09-25 14:29:11,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:11,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:29:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 14:29:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:29:11,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:11,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:11,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:11,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:11,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:11,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:11,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:29:11,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:11,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:11,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:11,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:11,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:11,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:11,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 14:29:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:11,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:11,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:11,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:29:11,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:11,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 14:29:11,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:11,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:11,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:29:11,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:11,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:11,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:29:11,184 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 14:29:11,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035479778] [2020-09-25 14:29:11,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:29:11,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:29:11,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686217548] [2020-09-25 14:29:11,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:29:11,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:11,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:29:11,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:29:11,189 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 6 states. [2020-09-25 14:29:11,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:11,272 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2020-09-25 14:29:11,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:29:11,274 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-09-25 14:29:11,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:11,275 INFO L225 Difference]: With dead ends: 46 [2020-09-25 14:29:11,276 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 14:29:11,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:29:11,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 14:29:11,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-09-25 14:29:11,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 14:29:11,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-09-25 14:29:11,287 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 25 [2020-09-25 14:29:11,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:11,288 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-09-25 14:29:11,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:29:11,289 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-09-25 14:29:11,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 14:29:11,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:11,291 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:29:11,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:29:11,292 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:11,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:11,292 INFO L82 PathProgramCache]: Analyzing trace with hash -852904039, now seen corresponding path program 1 times [2020-09-25 14:29:11,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:11,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308992765] [2020-09-25 14:29:11,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:11,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:11,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:11,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:11,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:11,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 14:29:11,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:29:11,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-09-25 14:29:11,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:11,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:11,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:29:11,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:29:11,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 14:29:11,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:11,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:11,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:11,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:11,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:11,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:11,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:11,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:11,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:11,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:11,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:11,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:11,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:11,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 14:29:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:11,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:11,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:11,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:11,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:29:11,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:11,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 14:29:11,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:11,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:11,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:29:11,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:11,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 14:29:11,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:11,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:29:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:11,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:12,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:12,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:12,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:12,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:29:12,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:12,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:12,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:29:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:29:12,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:12,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 14:29:12,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308992765] [2020-09-25 14:29:12,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:29:12,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 14:29:12,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848656484] [2020-09-25 14:29:12,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:29:12,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:12,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:29:12,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:29:12,049 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 9 states. [2020-09-25 14:29:12,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:12,253 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-09-25 14:29:12,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:29:12,254 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 14:29:12,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:12,256 INFO L225 Difference]: With dead ends: 56 [2020-09-25 14:29:12,256 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 14:29:12,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:29:12,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 14:29:12,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2020-09-25 14:29:12,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 14:29:12,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-09-25 14:29:12,269 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 35 [2020-09-25 14:29:12,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:12,269 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-09-25 14:29:12,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:29:12,269 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-09-25 14:29:12,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 14:29:12,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:12,271 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:29:12,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:29:12,272 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:12,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:12,273 INFO L82 PathProgramCache]: Analyzing trace with hash 2030561919, now seen corresponding path program 1 times [2020-09-25 14:29:12,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:12,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844408195] [2020-09-25 14:29:12,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:12,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:12,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:12,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:12,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:12,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 14:29:12,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:29:12,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-09-25 14:29:12,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:12,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:12,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:29:12,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:29:12,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 14:29:12,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:12,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:12,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:12,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:12,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:12,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:12,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:29:12,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:12,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:12,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:12,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:12,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:12,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:12,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 14:29:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:12,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:12,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:12,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:12,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:29:12,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:12,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 14:29:12,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:12,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:12,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:29:12,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:12,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 14:29:12,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:12,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:29:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:12,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:12,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:12,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:12,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:12,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:29:12,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:12,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:12,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:29:12,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:12,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:29:12,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:12,883 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:29:12,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844408195] [2020-09-25 14:29:12,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:29:12,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 14:29:12,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033254188] [2020-09-25 14:29:12,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:29:12,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:12,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:29:12,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:29:12,886 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 9 states. [2020-09-25 14:29:13,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:13,096 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2020-09-25 14:29:13,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:29:13,098 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 14:29:13,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:13,099 INFO L225 Difference]: With dead ends: 58 [2020-09-25 14:29:13,100 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 14:29:13,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:29:13,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 14:29:13,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 14:29:13,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 14:29:13,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-09-25 14:29:13,122 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 35 [2020-09-25 14:29:13,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:13,123 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-09-25 14:29:13,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:29:13,123 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-09-25 14:29:13,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 14:29:13,132 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:13,132 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:29:13,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:29:13,133 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:13,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:13,133 INFO L82 PathProgramCache]: Analyzing trace with hash -2122258312, now seen corresponding path program 1 times [2020-09-25 14:29:13,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:13,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563005907] [2020-09-25 14:29:13,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:13,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:13,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 14:29:13,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:29:13,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 764 [2020-09-25 14:29:13,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:13,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:13,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:29:13,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 14:29:13,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:29:13,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:13,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:13,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:13,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:13,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:13,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:13,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:13,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:13,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:13,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:13,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 14:29:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:13,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:14,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:14,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 14:29:14,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:29:14,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-09-25 14:29:14,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:14,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:14,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:29:14,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:14,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:29:14,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:14,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:29:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:14,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:14,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:14,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:29:14,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:14,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:29:14,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:14,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:14,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:29:14,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:14,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:14,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:14,312 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 14:29:14,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563005907] [2020-09-25 14:29:14,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:29:14,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:29:14,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934342734] [2020-09-25 14:29:14,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:29:14,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:14,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:29:14,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:29:14,315 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 7 states. [2020-09-25 14:29:14,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:14,422 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-09-25 14:29:14,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:29:14,423 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 14:29:14,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:14,425 INFO L225 Difference]: With dead ends: 61 [2020-09-25 14:29:14,425 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 14:29:14,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:29:14,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 14:29:14,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2020-09-25 14:29:14,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 14:29:14,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-09-25 14:29:14,434 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 36 [2020-09-25 14:29:14,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:14,435 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-09-25 14:29:14,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:29:14,435 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-09-25 14:29:14,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 14:29:14,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:14,437 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:29:14,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:29:14,438 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:14,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:14,438 INFO L82 PathProgramCache]: Analyzing trace with hash 404002040, now seen corresponding path program 1 times [2020-09-25 14:29:14,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:14,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007251998] [2020-09-25 14:29:14,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:14,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:14,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:14,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:14,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:14,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:16,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:16,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 14:29:16,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:29:16,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1559 [2020-09-25 14:29:16,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:16,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:16,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:29:16,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 14:29:16,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:29:16,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:16,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:16,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:16,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:16,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:16,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:16,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:29:16,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:16,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:16,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:16,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:16,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:16,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:16,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 14:29:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:16,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:16,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:16,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:16,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:16,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 14:29:16,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:29:16,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 14:29:16,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:16,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:16,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:29:16,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:16,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:29:16,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:16,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:29:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:16,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:16,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:16,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:29:16,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:16,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:29:16,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:16,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:16,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:29:16,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:16,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:16,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:16,356 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 14:29:16,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007251998] [2020-09-25 14:29:16,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:29:16,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:29:16,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598786525] [2020-09-25 14:29:16,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:29:16,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:16,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:29:16,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:29:16,360 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 7 states. [2020-09-25 14:29:16,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:16,501 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-09-25 14:29:16,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:29:16,503 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 14:29:16,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:16,504 INFO L225 Difference]: With dead ends: 61 [2020-09-25 14:29:16,505 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 14:29:16,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:29:16,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 14:29:16,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2020-09-25 14:29:16,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 14:29:16,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-09-25 14:29:16,522 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 36 [2020-09-25 14:29:16,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:16,523 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-09-25 14:29:16,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:29:16,523 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-09-25 14:29:16,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 14:29:16,525 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:16,526 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:16,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:29:16,526 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:16,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:16,527 INFO L82 PathProgramCache]: Analyzing trace with hash 594320754, now seen corresponding path program 1 times [2020-09-25 14:29:16,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:16,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993553211] [2020-09-25 14:29:16,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:16,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:16,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:16,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:16,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 14:29:16,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:16,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-25 14:29:16,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:16,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:16,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:29:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 14:29:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:29:16,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:16,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:16,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:16,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:16,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:16,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:16,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:16,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:16,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:16,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:16,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:16,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:16,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:16,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 14:29:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:16,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:16,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:17,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:17,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 14:29:17,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:17,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-09-25 14:29:17,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:17,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:17,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:29:17,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:29:17,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:29:17,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:17,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:29:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:17,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:17,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:17,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:29:17,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:17,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 14:29:17,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:17,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:17,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:29:17,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 14:29:17,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:29:17,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:17,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:29:17,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:17,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:17,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:17,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:17,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:17,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 14:29:17,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:17,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:17,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:29:17,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:29:17,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:17,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:17,469 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 14:29:17,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993553211] [2020-09-25 14:29:17,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:29:17,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:29:17,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081473402] [2020-09-25 14:29:17,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:29:17,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:17,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:29:17,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:29:17,473 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 8 states. [2020-09-25 14:29:17,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:17,630 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2020-09-25 14:29:17,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:29:17,631 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-09-25 14:29:17,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:17,636 INFO L225 Difference]: With dead ends: 71 [2020-09-25 14:29:17,636 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 14:29:17,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:29:17,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 14:29:17,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 14:29:17,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 14:29:17,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-09-25 14:29:17,655 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 46 [2020-09-25 14:29:17,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:17,655 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-09-25 14:29:17,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:29:17,655 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-09-25 14:29:17,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 14:29:17,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:17,657 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:17,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:29:17,657 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:17,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:17,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1723959796, now seen corresponding path program 2 times [2020-09-25 14:29:17,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:17,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476598979] [2020-09-25 14:29:17,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:17,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:17,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:18,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:18,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 14:29:18,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:18,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-09-25 14:29:18,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:18,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:18,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:29:18,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 14:29:18,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:29:18,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:18,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:18,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:18,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:18,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:18,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:18,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:18,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:18,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:18,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:18,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:18,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:18,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:18,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 14:29:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:18,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:18,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:18,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:18,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 14:29:18,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:18,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-25 14:29:18,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:18,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:18,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:29:18,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:29:18,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:29:18,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:18,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:29:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:18,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:18,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:18,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:29:18,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:18,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 14:29:18,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:18,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:18,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:29:18,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 14:29:18,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:29:18,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:18,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:29:18,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:18,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:18,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:18,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:18,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:18,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:29:18,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:18,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:18,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:29:18,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:29:18,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:18,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:18,410 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 14:29:18,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476598979] [2020-09-25 14:29:18,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:29:18,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:29:18,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257726760] [2020-09-25 14:29:18,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:29:18,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:18,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:29:18,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:29:18,415 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 7 states. [2020-09-25 14:29:18,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:18,517 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2020-09-25 14:29:18,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:29:18,521 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2020-09-25 14:29:18,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:18,522 INFO L225 Difference]: With dead ends: 71 [2020-09-25 14:29:18,523 INFO L226 Difference]: Without dead ends: 49 [2020-09-25 14:29:18,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:29:18,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-25 14:29:18,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-09-25 14:29:18,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-25 14:29:18,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-09-25 14:29:18,536 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 46 [2020-09-25 14:29:18,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:18,539 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-09-25 14:29:18,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:29:18,540 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-09-25 14:29:18,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 14:29:18,540 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:18,541 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:18,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:29:18,541 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:18,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:18,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1010225367, now seen corresponding path program 1 times [2020-09-25 14:29:18,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:18,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660620668] [2020-09-25 14:29:18,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:18,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:18,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:18,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:18,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:18,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:18,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:18,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:19,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:23,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:23,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 14:29:23,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:29:23,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4633 [2020-09-25 14:29:23,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:23,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:23,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:29:23,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 14:29:23,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 14:29:23,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:23,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:23,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:23,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:23,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:23,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:23,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:23,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:23,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:23,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:23,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:23,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:23,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:23,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 14:29:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:23,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:23,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:23,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:23,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:23,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:23,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:25,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:25,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 14:29:25,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:29:25,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1953 [2020-09-25 14:29:25,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:25,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:25,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:29:25,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:25,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 14:29:25,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:25,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:29:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:25,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:25,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:25,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:25,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:25,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 14:29:25,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:29:25,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-09-25 14:29:25,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:25,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:25,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:29:25,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:25,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:29:25,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:25,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:29:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:25,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:25,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:25,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:29:25,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:25,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:29:25,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:25,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:25,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:29:25,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:25,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:25,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:25,541 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 14:29:25,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660620668] [2020-09-25 14:29:25,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:29:25,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:29:25,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516478765] [2020-09-25 14:29:25,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:29:25,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:25,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:29:25,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:29:25,548 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 8 states. [2020-09-25 14:29:25,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:25,673 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-09-25 14:29:25,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:29:25,674 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-09-25 14:29:25,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:25,674 INFO L225 Difference]: With dead ends: 47 [2020-09-25 14:29:25,674 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 14:29:25,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:29:25,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 14:29:25,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 14:29:25,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 14:29:25,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 14:29:25,677 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2020-09-25 14:29:25,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:25,678 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 14:29:25,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:29:25,678 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 14:29:25,678 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 14:29:25,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 14:29:25,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 14:29:25,793 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 14:29:25,793 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 14:29:25,794 INFO L268 CegarLoopResult]: For program point gcdFINAL(lines 15 26) no Hoare annotation was computed. [2020-09-25 14:29:25,794 INFO L268 CegarLoopResult]: For program point gcdEXIT(lines 15 26) no Hoare annotation was computed. [2020-09-25 14:29:25,794 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (= gcd_~y2 |gcd_#in~y2|) (<= (+ gcd_~y1 1) gcd_~y2) (= gcd_~y1 |gcd_#in~y1|) (<= 1 gcd_~y1)) [2020-09-25 14:29:25,794 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-25 14:29:25,794 INFO L271 CegarLoopResult]: At program point gcdENTRY(lines 15 26) the Hoare annotation is: true [2020-09-25 14:29:25,795 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (<= 1 gcd_~y2) (<= (+ gcd_~y2 1) gcd_~y1) (= gcd_~y2 |gcd_#in~y2|) (= gcd_~y1 |gcd_#in~y1|)) [2020-09-25 14:29:25,795 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-25 14:29:25,795 INFO L268 CegarLoopResult]: For program point L22(lines 22 24) no Hoare annotation was computed. [2020-09-25 14:29:25,795 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-25 14:29:25,795 INFO L268 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-09-25 14:29:25,795 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-25 14:29:25,796 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 14:29:25,796 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-25 14:29:25,796 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-09-25 14:29:25,796 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 14:29:25,796 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-09-25 14:29:25,797 INFO L268 CegarLoopResult]: For program point L15(lines 15 26) no Hoare annotation was computed. [2020-09-25 14:29:25,797 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 14:29:25,797 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 14:29:25,797 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 14:29:25,797 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 14:29:25,797 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 14:29:25,797 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-25 14:29:25,798 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 14:29:25,798 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-25 14:29:25,798 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-25 14:29:25,798 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-09-25 14:29:25,798 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 28 43) no Hoare annotation was computed. [2020-09-25 14:29:25,799 INFO L268 CegarLoopResult]: For program point L38(lines 38 42) no Hoare annotation was computed. [2020-09-25 14:29:25,799 INFO L268 CegarLoopResult]: For program point L38-1(lines 28 43) no Hoare annotation was computed. [2020-09-25 14:29:25,799 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-09-25 14:29:25,799 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2020-09-25 14:29:25,799 INFO L268 CegarLoopResult]: For program point L30(lines 30 32) no Hoare annotation was computed. [2020-09-25 14:29:25,800 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 28 43) the Hoare annotation is: true [2020-09-25 14:29:25,800 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-25 14:29:25,800 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-09-25 14:29:25,801 INFO L271 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: true [2020-09-25 14:29:25,801 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-09-25 14:29:25,801 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-25 14:29:25,801 INFO L268 CegarLoopResult]: For program point L37-2(line 37) no Hoare annotation was computed. [2020-09-25 14:29:25,801 INFO L268 CegarLoopResult]: For program point L37-3(line 37) no Hoare annotation was computed. [2020-09-25 14:29:25,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:29:25 BoogieIcfgContainer [2020-09-25 14:29:25,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:29:25,815 INFO L168 Benchmark]: Toolchain (without parser) took 17343.81 ms. Allocated memory was 139.5 MB in the beginning and 335.0 MB in the end (delta: 195.6 MB). Free memory was 102.4 MB in the beginning and 284.3 MB in the end (delta: -181.9 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-09-25 14:29:25,816 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 14:29:25,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.35 ms. Allocated memory is still 139.5 MB. Free memory was 101.7 MB in the beginning and 92.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-25 14:29:25,818 INFO L168 Benchmark]: Boogie Preprocessor took 130.11 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 92.3 MB in the beginning and 181.6 MB in the end (delta: -89.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 14:29:25,823 INFO L168 Benchmark]: RCFGBuilder took 347.17 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 167.4 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-09-25 14:29:25,824 INFO L168 Benchmark]: TraceAbstraction took 16543.58 ms. Allocated memory was 202.9 MB in the beginning and 335.0 MB in the end (delta: 132.1 MB). Free memory was 166.8 MB in the beginning and 284.3 MB in the end (delta: -117.5 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2020-09-25 14:29:25,837 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 311.35 ms. Allocated memory is still 139.5 MB. Free memory was 101.7 MB in the beginning and 92.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.11 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 92.3 MB in the beginning and 181.6 MB in the end (delta: -89.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 347.17 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 167.4 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16543.58 ms. Allocated memory was 202.9 MB in the beginning and 335.0 MB in the end (delta: 132.1 MB). Free memory was 166.8 MB in the beginning and 284.3 MB in the end (delta: -117.5 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.2s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 319 SDtfs, 293 SDslu, 1100 SDs, 0 SdLazy, 514 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 29 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 36 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 14.2s InterpolantComputationTime, 330 NumberOfCodeBlocks, 330 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 321 ConstructedInterpolants, 0 QuantifiedInterpolants, 24870 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 75/75 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...