/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested9.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:32:41,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:32:41,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:32:41,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:32:41,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:32:41,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:32:41,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:32:41,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:32:41,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:32:41,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:32:41,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:32:41,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:32:41,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:32:41,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:32:41,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:32:41,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:32:41,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:32:41,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:32:41,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:32:41,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:32:41,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:32:41,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:32:41,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:32:41,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:32:41,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:32:41,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:32:41,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:32:41,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:32:41,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:32:41,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:32:41,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:32:41,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:32:41,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:32:41,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:32:41,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:32:41,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:32:41,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:32:41,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:32:41,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:32:41,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:32:41,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:32:41,658 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:32:41,686 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:32:41,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:32:41,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:32:41,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:32:41,691 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:32:41,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:32:41,692 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:32:41,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:32:41,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:32:41,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:32:41,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:32:41,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:32:41,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:32:41,695 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:32:41,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:32:41,695 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:32:41,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:32:41,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:32:41,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:32:41,696 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:32:41,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:32:41,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:32:41,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:32:41,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:32:41,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:32:41,699 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:32:41,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:32:41,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:32:41,700 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:32:41,700 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:32:42,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:32:42,223 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:32:42,228 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:32:42,229 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:32:42,230 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:32:42,231 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested9.i [2020-09-25 12:32:42,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3aa07e5ff/84295f7a477540718d291843fd27cdd9/FLAG28fe768bf [2020-09-25 12:32:42,824 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:32:42,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested9.i [2020-09-25 12:32:42,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3aa07e5ff/84295f7a477540718d291843fd27cdd9/FLAG28fe768bf [2020-09-25 12:32:43,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3aa07e5ff/84295f7a477540718d291843fd27cdd9 [2020-09-25 12:32:43,197 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:32:43,203 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:32:43,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:32:43,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:32:43,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:32:43,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:32:43" (1/1) ... [2020-09-25 12:32:43,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@230a9b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:43, skipping insertion in model container [2020-09-25 12:32:43,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:32:43" (1/1) ... [2020-09-25 12:32:43,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:32:43,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:32:43,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:32:43,491 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:32:43,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:32:43,528 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:32:43,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:43 WrapperNode [2020-09-25 12:32:43,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:32:43,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:32:43,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:32:43,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:32:43,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:43" (1/1) ... [2020-09-25 12:32:43,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:43" (1/1) ... [2020-09-25 12:32:43,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:43" (1/1) ... [2020-09-25 12:32:43,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:43" (1/1) ... [2020-09-25 12:32:43,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:43" (1/1) ... [2020-09-25 12:32:43,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:43" (1/1) ... [2020-09-25 12:32:43,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:43" (1/1) ... [2020-09-25 12:32:43,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:32:43,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:32:43,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:32:43,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:32:43,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:32:43,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:32:43,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:32:43,735 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 12:32:43,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 12:32:43,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:32:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:32:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 12:32:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 12:32:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 12:32:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:32:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:32:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:32:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:32:44,008 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:32:44,009 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 12:32:44,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:32:44 BoogieIcfgContainer [2020-09-25 12:32:44,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:32:44,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:32:44,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:32:44,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:32:44,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:32:43" (1/3) ... [2020-09-25 12:32:44,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a6dd5cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:32:44, skipping insertion in model container [2020-09-25 12:32:44,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:43" (2/3) ... [2020-09-25 12:32:44,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a6dd5cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:32:44, skipping insertion in model container [2020-09-25 12:32:44,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:32:44" (3/3) ... [2020-09-25 12:32:44,026 INFO L109 eAbstractionObserver]: Analyzing ICFG nested9.i [2020-09-25 12:32:44,041 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:32:44,050 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:32:44,075 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:32:44,108 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:32:44,108 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:32:44,108 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:32:44,108 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:32:44,109 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:32:44,109 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:32:44,109 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:32:44,109 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:32:44,135 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-09-25 12:32:44,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 12:32:44,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:44,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:44,148 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:44,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:44,156 INFO L82 PathProgramCache]: Analyzing trace with hash -980226087, now seen corresponding path program 1 times [2020-09-25 12:32:44,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:44,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372644962] [2020-09-25 12:32:44,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:44,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:44,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:44,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:44,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:44,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:45,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:45,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:45,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:45,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:45,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 12:32:45,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:32:45,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1109 [2020-09-25 12:32:45,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:45,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:45,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:32:45,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 12:32:45,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:32:45,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:32:45,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:45,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:45,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:45,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 12:32:45,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:45,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:32:45,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:45,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:45,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:45,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:45,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:45,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:45,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:32:45,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372644962] [2020-09-25 12:32:45,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:45,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 12:32:45,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035194508] [2020-09-25 12:32:45,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:32:45,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:45,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:32:45,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:32:45,660 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 8 states. [2020-09-25 12:32:46,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:46,216 INFO L93 Difference]: Finished difference Result 126 states and 163 transitions. [2020-09-25 12:32:46,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:32:46,218 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-25 12:32:46,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:46,233 INFO L225 Difference]: With dead ends: 126 [2020-09-25 12:32:46,233 INFO L226 Difference]: Without dead ends: 86 [2020-09-25 12:32:46,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:32:46,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-25 12:32:46,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 52. [2020-09-25 12:32:46,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 12:32:46,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-09-25 12:32:46,295 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 34 [2020-09-25 12:32:46,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:46,296 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-09-25 12:32:46,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:32:46,296 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-09-25 12:32:46,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 12:32:46,298 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:46,298 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:46,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:32:46,299 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:46,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:46,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1866176905, now seen corresponding path program 1 times [2020-09-25 12:32:46,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:46,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504426966] [2020-09-25 12:32:46,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:46,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:46,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:46,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:46,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:46,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:46,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:46,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:46,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:46,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:47,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:47,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:47,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:47,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:48,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:48,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:48,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:48,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:48,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:48,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 12:32:48,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-25 12:32:48,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2232 [2020-09-25 12:32:48,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:48,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:48,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:32:48,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 12:32:48,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:32:48,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:48,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:48,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:48,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:48,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 12:32:48,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:48,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:32:48,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:48,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:48,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:48,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:48,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:48,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:48,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:32:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:48,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:48,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:48,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:48,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:48,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:32:48,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:48,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:48,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:48,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:48,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:48,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:48,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:32:48,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504426966] [2020-09-25 12:32:48,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:48,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 12:32:48,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974817167] [2020-09-25 12:32:48,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:32:48,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:48,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:32:48,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:32:48,636 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 8 states. [2020-09-25 12:32:48,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:48,879 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2020-09-25 12:32:48,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:32:48,879 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-09-25 12:32:48,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:48,883 INFO L225 Difference]: With dead ends: 89 [2020-09-25 12:32:48,883 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 12:32:48,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:32:48,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 12:32:48,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2020-09-25 12:32:48,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 12:32:48,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-09-25 12:32:48,895 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 43 [2020-09-25 12:32:48,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:48,896 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-09-25 12:32:48,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:32:48,896 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-09-25 12:32:48,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 12:32:48,898 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:48,898 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:48,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:32:48,898 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:48,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:48,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1348236411, now seen corresponding path program 1 times [2020-09-25 12:32:48,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:48,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858766709] [2020-09-25 12:32:48,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:48,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:48,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:48,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:49,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:49,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:49,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:49,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:49,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:49,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:50,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:50,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:50,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:50,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:50,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:50,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:50,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:50,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:51,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:52,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:52,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:52,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:53,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:53,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:53,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:53,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:53,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:53,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 12:32:53,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-09-25 12:32:53,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:32:53,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:53,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:53,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:32:53,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 12:32:53,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:32:53,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:54,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:54,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:54,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:54,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 12:32:54,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:54,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:32:54,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:54,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:54,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:54,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:54,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:54,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:54,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 12:32:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:54,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:54,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:54,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:54,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:54,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:32:54,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:54,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:54,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:54,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:54,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:54,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:54,063 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 12:32:54,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858766709] [2020-09-25 12:32:54,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:32:54,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:32:54,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103980671] [2020-09-25 12:32:54,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:32:54,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:54,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:32:54,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:32:54,066 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 8 states. [2020-09-25 12:32:54,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:54,239 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2020-09-25 12:32:54,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:32:54,240 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2020-09-25 12:32:54,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:54,241 INFO L225 Difference]: With dead ends: 60 [2020-09-25 12:32:54,241 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 12:32:54,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:32:54,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 12:32:54,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 12:32:54,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 12:32:54,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 12:32:54,243 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-09-25 12:32:54,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:54,243 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 12:32:54,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:32:54,243 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 12:32:54,243 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 12:32:54,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:32:54,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 12:32:54,407 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 12:32:54,407 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~__BLAST_NONDET~0 |old(~__BLAST_NONDET~0)|) [2020-09-25 12:32:54,408 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 12:32:54,408 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 12:32:54,408 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 12:32:54,408 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 12:32:54,408 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 12:32:54,409 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 12:32:54,409 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 12:32:54,409 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 12:32:54,409 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 12:32:54,409 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 12:32:54,409 INFO L271 CegarLoopResult]: At program point L27(lines 14 29) the Hoare annotation is: true [2020-09-25 12:32:54,410 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 29) no Hoare annotation was computed. [2020-09-25 12:32:54,410 INFO L268 CegarLoopResult]: For program point L23-2(lines 23 26) no Hoare annotation was computed. [2020-09-25 12:32:54,410 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-25 12:32:54,410 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 12:32:54,410 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-25 12:32:54,412 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-25 12:32:54,412 INFO L264 CegarLoopResult]: At program point L23-5(lines 23 26) the Hoare annotation is: (or (<= 1 main_~n~0) (<= 0 main_~i~0)) [2020-09-25 12:32:54,412 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 12:32:54,412 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 12:32:54,412 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 12:32:54,413 INFO L268 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-09-25 12:32:54,413 INFO L268 CegarLoopResult]: For program point L15-4(line 15) no Hoare annotation was computed. [2020-09-25 12:32:54,413 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 12:32:54,413 INFO L268 CegarLoopResult]: For program point L24-3(lines 24 26) no Hoare annotation was computed. [2020-09-25 12:32:54,413 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 12:32:54,413 INFO L268 CegarLoopResult]: For program point L24-4(line 24) no Hoare annotation was computed. [2020-09-25 12:32:54,414 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-25 12:32:54,414 INFO L268 CegarLoopResult]: For program point L24-5(line 24) no Hoare annotation was computed. [2020-09-25 12:32:54,414 INFO L264 CegarLoopResult]: At program point L24-6(lines 24 26) the Hoare annotation is: (and (<= 1 main_~n~0) (<= main_~i~0 (+ main_~n~0 1))) [2020-09-25 12:32:54,414 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 12:32:54,414 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 12:32:54,414 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 12:32:54,415 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 12:32:54,415 INFO L268 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-09-25 12:32:54,415 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 12:32:54,415 INFO L268 CegarLoopResult]: For program point L25-4(line 25) no Hoare annotation was computed. [2020-09-25 12:32:54,415 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-25 12:32:54,416 INFO L264 CegarLoopResult]: At program point L25-5(lines 25 26) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= main_~i~0 (+ main_~n~0 1))) [2020-09-25 12:32:54,416 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 12:32:54,416 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 12:32:54,416 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-25 12:32:54,416 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 29) no Hoare annotation was computed. [2020-09-25 12:32:54,416 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 29) the Hoare annotation is: true [2020-09-25 12:32:54,417 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (* 3 main_~i~0))) (and (<= 1 main_~n~0) (<= (+ main_~k~0 2) .cse0) (<= (+ main_~j~0 1) .cse0) (<= main_~i~0 (+ main_~n~0 1)))) [2020-09-25 12:32:54,417 INFO L268 CegarLoopResult]: For program point L26-1(lines 25 26) no Hoare annotation was computed. [2020-09-25 12:32:54,417 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 12:32:54,417 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-25 12:32:54,417 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 12:32:54,418 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 12:32:54,418 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-25 12:32:54,418 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 12:32:54,419 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 12:32:54,419 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 12:32:54,419 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 12:32:54,419 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 12:32:54,420 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 12:32:54,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:32:54 BoogieIcfgContainer [2020-09-25 12:32:54,454 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 12:32:54,460 INFO L168 Benchmark]: Toolchain (without parser) took 11256.75 ms. Allocated memory was 144.7 MB in the beginning and 317.2 MB in the end (delta: 172.5 MB). Free memory was 100.6 MB in the beginning and 100.0 MB in the end (delta: 625.9 kB). Peak memory consumption was 173.1 MB. Max. memory is 7.1 GB. [2020-09-25 12:32:54,461 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 144.7 MB. Free memory was 119.4 MB in the beginning and 118.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-25 12:32:54,462 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.30 ms. Allocated memory is still 144.7 MB. Free memory was 100.2 MB in the beginning and 90.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-25 12:32:54,464 INFO L168 Benchmark]: Boogie Preprocessor took 132.09 ms. Allocated memory was 144.7 MB in the beginning and 200.3 MB in the end (delta: 55.6 MB). Free memory was 90.4 MB in the beginning and 178.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-25 12:32:54,465 INFO L168 Benchmark]: RCFGBuilder took 354.17 ms. Allocated memory is still 200.3 MB. Free memory was 178.5 MB in the beginning and 161.3 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2020-09-25 12:32:54,472 INFO L168 Benchmark]: TraceAbstraction took 10436.38 ms. Allocated memory was 200.3 MB in the beginning and 317.2 MB in the end (delta: 116.9 MB). Free memory was 160.3 MB in the beginning and 100.0 MB in the end (delta: 60.3 MB). Peak memory consumption was 177.2 MB. Max. memory is 7.1 GB. [2020-09-25 12:32:54,483 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 144.7 MB. Free memory was 119.4 MB in the beginning and 118.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 324.30 ms. Allocated memory is still 144.7 MB. Free memory was 100.2 MB in the beginning and 90.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.09 ms. Allocated memory was 144.7 MB in the beginning and 200.3 MB in the end (delta: 55.6 MB). Free memory was 90.4 MB in the beginning and 178.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 354.17 ms. Allocated memory is still 200.3 MB. Free memory was 178.5 MB in the beginning and 161.3 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10436.38 ms. Allocated memory was 200.3 MB in the beginning and 317.2 MB in the end (delta: 116.9 MB). Free memory was 160.3 MB in the beginning and 100.0 MB in the end (delta: 60.3 MB). Peak memory consumption was 177.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 <= n && i <= n + 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 <= n || 0 <= i - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (1 <= n && j + 1 <= 3 * i) && i <= n + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.1s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 127 SDtfs, 296 SDslu, 97 SDs, 0 SdLazy, 621 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 36 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 14 PreInvPairs, 26 NumberOfFragments, 63 HoareAnnotationTreeSize, 14 FomulaSimplifications, 369 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 52 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 13035 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 10/11 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...