/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/elimination_max_rec.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:21:56,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:21:56,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:21:56,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:21:56,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:21:56,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:21:56,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:21:56,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:21:56,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:21:56,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:21:56,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:21:56,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:21:56,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:21:57,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:21:57,003 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:21:57,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:21:57,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:21:57,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:21:57,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:21:57,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:21:57,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:21:57,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:21:57,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:21:57,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:21:57,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:21:57,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:21:57,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:21:57,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:21:57,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:21:57,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:21:57,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:21:57,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:21:57,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:21:57,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:21:57,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:21:57,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:21:57,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:21:57,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:21:57,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:21:57,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:21:57,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:21:57,057 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 [2020-09-24 19:21:57,103 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:21:57,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:21:57,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:21:57,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:21:57,105 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:21:57,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:21:57,106 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:21:57,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:21:57,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:21:57,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:21:57,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:21:57,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:21:57,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:21:57,107 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:21:57,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:21:57,108 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:21:57,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:21:57,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:21:57,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:21:57,108 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:21:57,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:21:57,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:21:57,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:21:57,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:21:57,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:21:57,110 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:21:57,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:21:57,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:21:57,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:21:57,110 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:21:57,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:21:57,581 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:21:57,585 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:21:57,587 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:21:57,587 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:21:57,588 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max_rec.c [2020-09-24 19:21:57,666 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00b494bdc/79411af25ed14d1186291d3b50496f47/FLAG9b4e53f65 [2020-09-24 19:21:58,218 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:21:58,218 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/elimination_max_rec.c [2020-09-24 19:21:58,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00b494bdc/79411af25ed14d1186291d3b50496f47/FLAG9b4e53f65 [2020-09-24 19:21:58,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00b494bdc/79411af25ed14d1186291d3b50496f47 [2020-09-24 19:21:58,587 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:21:58,593 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:21:58,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:21:58,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:21:58,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:21:58,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:21:58" (1/1) ... [2020-09-24 19:21:58,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e4a6545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:21:58, skipping insertion in model container [2020-09-24 19:21:58,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:21:58" (1/1) ... [2020-09-24 19:21:58,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:21:58,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:21:58,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:21:58,889 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:21:58,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:21:58,930 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:21:58,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:21:58 WrapperNode [2020-09-24 19:21:58,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:21:58,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:21:58,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:21:58,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:21:59,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:21:58" (1/1) ... [2020-09-24 19:21:59,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:21:58" (1/1) ... [2020-09-24 19:21:59,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:21:58" (1/1) ... [2020-09-24 19:21:59,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:21:58" (1/1) ... [2020-09-24 19:21:59,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:21:58" (1/1) ... [2020-09-24 19:21:59,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:21:58" (1/1) ... [2020-09-24 19:21:59,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:21:58" (1/1) ... [2020-09-24 19:21:59,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:21:59,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:21:59,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:21:59,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:21:59,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:21:58" (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 [2020-09-24 19:21:59,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:21:59,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:21:59,129 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 19:21:59,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 19:21:59,130 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-24 19:21:59,130 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:21:59,130 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-24 19:21:59,130 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 19:21:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 19:21:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:21:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 19:21:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 19:21:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 19:21:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:21:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 19:21:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:21:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:21:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 19:21:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-24 19:21:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:21:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:21:59,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:21:59,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:21:59,501 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:21:59,501 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 19:21:59,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:21:59 BoogieIcfgContainer [2020-09-24 19:21:59,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:21:59,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:21:59,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:21:59,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:21:59,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:21:58" (1/3) ... [2020-09-24 19:21:59,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9add9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:21:59, skipping insertion in model container [2020-09-24 19:21:59,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:21:58" (2/3) ... [2020-09-24 19:21:59,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9add9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:21:59, skipping insertion in model container [2020-09-24 19:21:59,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:21:59" (3/3) ... [2020-09-24 19:21:59,519 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2020-09-24 19:21:59,528 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:21:59,538 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:21:59,560 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:21:59,589 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:21:59,589 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:21:59,589 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:21:59,589 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:21:59,589 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:21:59,589 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:21:59,590 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:21:59,590 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:21:59,613 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-09-24 19:21:59,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 19:21:59,620 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:59,621 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] [2020-09-24 19:21:59,622 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:59,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:59,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1490874143, now seen corresponding path program 1 times [2020-09-24 19:21:59,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:59,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255757556] [2020-09-24 19:21:59,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:59,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:00,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:00,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 19:22:00,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:00,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 545 [2020-09-24 19:22:00,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:00,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:22:00,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 19:22:00,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 19:22:00,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:22:00,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:22:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:00,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:00,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:00,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:22:00,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:00,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:22:00,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:00,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:22:00,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:00,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:22:00,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:22:00,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 19:22:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:00,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:00,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:00,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:22:00,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:00,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:22:00,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:00,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:22:00,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:00,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:22:00,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:00,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 19:22:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:00,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:00,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:00,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:22:00,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:00,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:22:00,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:00,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:22:00,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:00,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:22:00,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:22:00,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:22:00,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255757556] [2020-09-24 19:22:00,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:22:00,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 19:22:00,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354935472] [2020-09-24 19:22:00,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 19:22:00,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:22:00,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 19:22:00,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:22:00,667 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 10 states. [2020-09-24 19:22:01,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:22:01,588 INFO L93 Difference]: Finished difference Result 209 states and 241 transitions. [2020-09-24 19:22:01,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:22:01,594 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-09-24 19:22:01,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:22:01,617 INFO L225 Difference]: With dead ends: 209 [2020-09-24 19:22:01,618 INFO L226 Difference]: Without dead ends: 123 [2020-09-24 19:22:01,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:22:01,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-24 19:22:01,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 108. [2020-09-24 19:22:01,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-24 19:22:01,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 115 transitions. [2020-09-24 19:22:01,746 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 115 transitions. Word has length 31 [2020-09-24 19:22:01,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:22:01,747 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 115 transitions. [2020-09-24 19:22:01,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 19:22:01,747 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 115 transitions. [2020-09-24 19:22:01,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 19:22:01,753 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:22:01,753 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:22:01,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:22:01,754 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:22:01,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:22:01,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1249778318, now seen corresponding path program 1 times [2020-09-24 19:22:01,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:22:01,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173938762] [2020-09-24 19:22:01,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:22:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:01,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:02,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:02,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:02,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 19:22:02,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:22:02,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-24 19:22:02,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:02,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:22:02,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 19:22:02,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:22:02,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:22:02,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:22:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:02,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:02,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:02,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:22:02,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:02,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:22:02,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:02,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:22:02,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:02,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:22:02,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:22:02,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 19:22:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:02,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:02,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:02,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:22:02,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:02,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:22:02,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:02,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:22:02,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:02,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:22:02,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:03,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 19:22:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:03,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:03,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:03,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:22:03,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:03,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:22:03,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:03,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:22:03,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:03,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:22:03,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:03,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 19:22:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:03,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:03,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:03,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:22:03,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:03,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:22:03,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:03,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:22:03,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:03,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:22:03,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:03,076 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:22:03,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173938762] [2020-09-24 19:22:03,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:22:03,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 19:22:03,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497488574] [2020-09-24 19:22:03,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 19:22:03,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:22:03,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 19:22:03,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-24 19:22:03,081 INFO L87 Difference]: Start difference. First operand 108 states and 115 transitions. Second operand 14 states. [2020-09-24 19:22:04,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:22:04,516 INFO L93 Difference]: Finished difference Result 205 states and 228 transitions. [2020-09-24 19:22:04,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:22:04,517 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-09-24 19:22:04,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:22:04,522 INFO L225 Difference]: With dead ends: 205 [2020-09-24 19:22:04,522 INFO L226 Difference]: Without dead ends: 203 [2020-09-24 19:22:04,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2020-09-24 19:22:04,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-09-24 19:22:04,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 155. [2020-09-24 19:22:04,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-24 19:22:04,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 169 transitions. [2020-09-24 19:22:04,547 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 169 transitions. Word has length 52 [2020-09-24 19:22:04,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:22:04,548 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 169 transitions. [2020-09-24 19:22:04,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 19:22:04,548 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 169 transitions. [2020-09-24 19:22:04,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 19:22:04,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:22:04,550 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:22:04,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:22:04,551 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:22:04,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:22:04,551 INFO L82 PathProgramCache]: Analyzing trace with hash -448975570, now seen corresponding path program 1 times [2020-09-24 19:22:04,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:22:04,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691817270] [2020-09-24 19:22:04,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:22:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:04,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:04,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:04,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:05,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:05,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 19:22:05,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:22:05,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:22:05,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:05,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:22:05,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 19:22:05,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 19:22:05,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:05,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:22:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:05,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:05,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:05,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:22:05,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:05,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:22:05,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:22:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:05,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:22:05,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:05,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 19:22:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:05,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:05,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:05,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:22:05,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:05,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:22:05,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:05,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:22:05,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:05,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:22:05,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:05,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 19:22:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:05,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:05,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:05,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:22:05,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:05,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:22:05,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:05,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:22:05,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:05,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:22:05,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:05,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 19:22:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:05,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:05,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:05,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:22:05,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:05,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:22:05,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:05,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:22:05,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:05,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:22:05,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:05,735 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:22:05,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691817270] [2020-09-24 19:22:05,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:22:05,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 19:22:05,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237645386] [2020-09-24 19:22:05,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 19:22:05,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:22:05,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 19:22:05,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:22:05,738 INFO L87 Difference]: Start difference. First operand 155 states and 169 transitions. Second operand 11 states. [2020-09-24 19:22:06,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:22:06,222 INFO L93 Difference]: Finished difference Result 218 states and 237 transitions. [2020-09-24 19:22:06,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:22:06,223 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-09-24 19:22:06,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:22:06,226 INFO L225 Difference]: With dead ends: 218 [2020-09-24 19:22:06,226 INFO L226 Difference]: Without dead ends: 102 [2020-09-24 19:22:06,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:22:06,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-24 19:22:06,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-09-24 19:22:06,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-24 19:22:06,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2020-09-24 19:22:06,261 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 52 [2020-09-24 19:22:06,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:22:06,262 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2020-09-24 19:22:06,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 19:22:06,262 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2020-09-24 19:22:06,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 19:22:06,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:22:06,268 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:22:06,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:22:06,269 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:22:06,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:22:06,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1366237712, now seen corresponding path program 1 times [2020-09-24 19:22:06,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:22:06,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847092348] [2020-09-24 19:22:06,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:22:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:06,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:06,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:07,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:07,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-24 19:22:07,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:22:07,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-09-24 19:22:07,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:07,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:22:07,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 19:22:07,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 19:22:07,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:22:07,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:22:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:07,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:07,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:07,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:22:07,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:07,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:22:07,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:07,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:22:07,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:07,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:22:07,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:22:07,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 19:22:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:07,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:07,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:07,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:22:07,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:07,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:22:07,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:07,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:22:07,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:07,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:22:07,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:07,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 19:22:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:07,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:07,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:07,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:22:07,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:07,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:22:07,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:07,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:22:07,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:07,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:22:07,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:07,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 19:22:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:07,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:07,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:07,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:22:07,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:07,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:22:07,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:22:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:07,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:22:07,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:07,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 19:22:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:07,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:07,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:07,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 19:22:07,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:07,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:22:07,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:07,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:22:07,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:07,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:22:07,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:07,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 19:22:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:07,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:07,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:07,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:22:07,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:07,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:22:07,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:07,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:22:07,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:07,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:22:07,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:07,619 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 19:22:07,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847092348] [2020-09-24 19:22:07,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:22:07,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 19:22:07,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027123770] [2020-09-24 19:22:07,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 19:22:07,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:22:07,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 19:22:07,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-24 19:22:07,622 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand 15 states. [2020-09-24 19:22:08,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:22:08,321 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2020-09-24 19:22:08,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:22:08,321 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 72 [2020-09-24 19:22:08,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:22:08,322 INFO L225 Difference]: With dead ends: 104 [2020-09-24 19:22:08,322 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 19:22:08,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2020-09-24 19:22:08,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 19:22:08,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 19:22:08,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 19:22:08,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 19:22:08,327 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2020-09-24 19:22:08,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:22:08,327 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 19:22:08,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 19:22:08,327 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 19:22:08,328 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 19:22:08,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:22:08,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 19:22:08,944 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 19:22:08,945 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 19:22:08,945 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 19:22:08,945 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-24 19:22:08,945 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:22:08,945 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:22:08,946 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 19:22:08,946 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 19:22:08,946 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 19:22:08,946 INFO L271 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 5 7) the Hoare annotation is: true [2020-09-24 19:22:08,946 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 19:22:08,946 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 19:22:08,946 INFO L268 CegarLoopResult]: For program point L6-3(lines 5 7) no Hoare annotation was computed. [2020-09-24 19:22:08,947 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2020-09-24 19:22:08,947 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 39 48) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-09-24 19:22:08,947 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 39 48) no Hoare annotation was computed. [2020-09-24 19:22:08,947 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-24 19:22:08,947 INFO L268 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-09-24 19:22:08,947 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 39 48) no Hoare annotation was computed. [2020-09-24 19:22:08,947 INFO L264 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= (select |#memory_int| |main_#t~malloc10.base|) .cse0))) [2020-09-24 19:22:08,948 INFO L264 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-09-24 19:22:08,948 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-09-24 19:22:08,948 INFO L264 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-09-24 19:22:08,948 INFO L268 CegarLoopResult]: For program point L43-1(line 43) no Hoare annotation was computed. [2020-09-24 19:22:08,948 INFO L268 CegarLoopResult]: For program point L44-2(line 44) no Hoare annotation was computed. [2020-09-24 19:22:08,948 INFO L268 CegarLoopResult]: For program point L42-1(line 42) no Hoare annotation was computed. [2020-09-24 19:22:08,948 INFO L268 CegarLoopResult]: For program point L44-3(line 44) no Hoare annotation was computed. [2020-09-24 19:22:08,949 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-24 19:22:08,949 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-09-24 19:22:08,949 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 19:22:08,949 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-24 19:22:08,949 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 14 37) the Hoare annotation is: true [2020-09-24 19:22:08,950 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (let ((.cse2 ((as const (Array Int Int)) 0))) (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse2)))) (and (or .cse0 (not (<= 1 |check_#in~x|)) .cse1 (<= 1 check_~x)) (or .cse0 (not (<= 0 |check_#in~x|)) .cse1 (= (select |#memory_int| check_~a.base) .cse2))))) [2020-09-24 19:22:08,950 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-24 19:22:08,950 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-09-24 19:22:08,950 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 19:22:08,950 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-24 19:22:08,950 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 19:22:08,950 INFO L268 CegarLoopResult]: For program point L23-2(lines 23 24) no Hoare annotation was computed. [2020-09-24 19:22:08,951 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-24 19:22:08,951 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-24 19:22:08,951 INFO L268 CegarLoopResult]: For program point L23-5(line 23) no Hoare annotation was computed. [2020-09-24 19:22:08,951 INFO L268 CegarLoopResult]: For program point L23-6(line 23) no Hoare annotation was computed. [2020-09-24 19:22:08,951 INFO L268 CegarLoopResult]: For program point L23-7(line 23) no Hoare annotation was computed. [2020-09-24 19:22:08,951 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 19:22:08,951 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 19:22:08,952 INFO L268 CegarLoopResult]: For program point L23-9(line 23) no Hoare annotation was computed. [2020-09-24 19:22:08,952 INFO L268 CegarLoopResult]: For program point L23-10(line 23) no Hoare annotation was computed. [2020-09-24 19:22:08,952 INFO L264 CegarLoopResult]: At program point L23-11(lines 23 24) the Hoare annotation is: (let ((.cse1 ((as const (Array Int Int)) 0))) (let ((.cse2 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse0 (+ check_~y 1)) (.cse3 (not (= (select |#memory_int| |check_#in~a.base|) .cse1)))) (and (or (and (<= .cse0 check_~n) (= (select |#memory_int| check_~a.base) .cse1) (<= 1 check_~x)) .cse2 (not (<= 0 |check_#in~x|)) .cse3) (or .cse2 (not (<= 1 |check_#in~x|)) (<= .cse0 |check_#in~n|) .cse3)))) [2020-09-24 19:22:08,952 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 14 37) no Hoare annotation was computed. [2020-09-24 19:22:08,952 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (let ((.cse2 ((as const (Array Int Int)) 0))) (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse2)))) (and (or .cse0 (not (<= 1 |check_#in~x|)) .cse1 (<= 1 check_~x)) (or (and (= check_~ax~0 0) (= check_~ai~0 0) (= (select |#memory_int| check_~a.base) .cse2)) .cse0 (not (<= 0 |check_#in~x|)) .cse1)))) [2020-09-24 19:22:08,953 INFO L268 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-09-24 19:22:08,953 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-24 19:22:08,953 INFO L268 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2020-09-24 19:22:08,953 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-24 19:22:08,953 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-24 19:22:08,953 INFO L268 CegarLoopResult]: For program point L30-2(line 30) no Hoare annotation was computed. [2020-09-24 19:22:08,953 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 19:22:08,954 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-09-24 19:22:08,954 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 19:22:08,954 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-09-24 19:22:08,954 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-24 19:22:08,954 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-24 19:22:08,954 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 14 37) no Hoare annotation was computed. [2020-09-24 19:22:08,954 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (let ((.cse1 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse2 (not (= (select |#memory_int| |check_#in~a.base|) .cse0)))) (and (or (and (< check_~y check_~n) (<= (+ check_~y 1) |check_#in~n|) (<= 0 check_~x) (= (select |#memory_int| check_~a.base) .cse0)) .cse1 (not (<= 0 |check_#in~x|)) .cse2) (or .cse1 (not (<= 1 |check_#in~x|)) .cse2 (<= 1 check_~x))))) [2020-09-24 19:22:08,955 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 19:22:08,955 INFO L268 CegarLoopResult]: For program point L14(lines 14 37) no Hoare annotation was computed. [2020-09-24 19:22:08,955 INFO L268 CegarLoopResult]: For program point L14-1(lines 14 37) no Hoare annotation was computed. [2020-09-24 19:22:08,955 INFO L268 CegarLoopResult]: For program point L14-2(lines 14 37) no Hoare annotation was computed. [2020-09-24 19:22:08,955 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 8 10) the Hoare annotation is: true [2020-09-24 19:22:08,955 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 8 10) no Hoare annotation was computed. [2020-09-24 19:22:08,955 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-24 19:22:08,956 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-24 19:22:08,956 INFO L268 CegarLoopResult]: For program point L9-3(lines 8 10) no Hoare annotation was computed. [2020-09-24 19:22:08,956 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-09-24 19:22:08,956 INFO L264 CegarLoopResult]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-09-24 19:22:08,956 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:22:08,956 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitFINAL(line -1) no Hoare annotation was computed. [2020-09-24 19:22:08,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:22:08 BoogieIcfgContainer [2020-09-24 19:22:08,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:22:08,967 INFO L168 Benchmark]: Toolchain (without parser) took 10377.43 ms. Allocated memory was 137.4 MB in the beginning and 322.4 MB in the end (delta: 185.1 MB). Free memory was 99.9 MB in the beginning and 134.1 MB in the end (delta: -34.2 MB). Peak memory consumption was 150.9 MB. Max. memory is 7.1 GB. [2020-09-24 19:22:08,968 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 19:22:08,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.11 ms. Allocated memory is still 137.4 MB. Free memory was 99.3 MB in the beginning and 89.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-24 19:22:08,970 INFO L168 Benchmark]: Boogie Preprocessor took 129.35 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 89.0 MB in the beginning and 177.5 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 19:22:08,971 INFO L168 Benchmark]: RCFGBuilder took 446.08 ms. Allocated memory is still 199.8 MB. Free memory was 176.8 MB in the beginning and 156.4 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-09-24 19:22:08,971 INFO L168 Benchmark]: TraceAbstraction took 9455.98 ms. Allocated memory was 199.8 MB in the beginning and 322.4 MB in the end (delta: 122.7 MB). Free memory was 155.8 MB in the beginning and 134.1 MB in the end (delta: 21.6 MB). Peak memory consumption was 144.3 MB. Max. memory is 7.1 GB. [2020-09-24 19:22:08,975 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 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 337.11 ms. Allocated memory is still 137.4 MB. Free memory was 99.3 MB in the beginning and 89.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.35 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 89.0 MB in the beginning and 177.5 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 446.08 ms. Allocated memory is still 199.8 MB. Free memory was 176.8 MB in the beginning and 156.4 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9455.98 ms. Allocated memory was 199.8 MB in the beginning and 322.4 MB in the end (delta: 122.7 MB). Free memory was 155.8 MB in the beginning and 134.1 MB in the end (delta: 21.6 MB). Peak memory consumption was 144.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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 7 procedures, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.7s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 257 SDtfs, 878 SDslu, 340 SDs, 0 SdLazy, 2511 SolverSat, 234 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred 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: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 63 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 77 PreInvPairs, 88 NumberOfFragments, 262 HoareAnnotationTreeSize, 77 FomulaSimplifications, 430 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 15 FomulaSimplificationsInter, 468 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 207 NumberOfCodeBlocks, 207 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 203 ConstructedInterpolants, 0 QuantifiedInterpolants, 40726 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 21/27 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...